Hitachi Command Suite. Global Link Manager. User Guide. Document Organization. Product Version. Getting Help. Contents MK-92HC214-06

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1 Hitachi Command Suite Global Link Manager User Guide Document Organization Product Version Getting Help Contents MK-92HC214-06

2 2014, 2016 Hitachi, Ltd. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including copying and recording, or stored in a database or retrieval system for commercial purposes without the express written permission of Hitachi, Ltd., or Hitachi Data Systems Corporation (collectively Hitachi ). Licensee may make copies of the Materials provided that any such copy is: (i) created as an essential step in utilization of the Software as licensed and is used in no other manner; or (ii) used for archival purposes. Licensee may not make any other copies of the Materials. Materials mean text, data, photographs, graphics, audio, video and documents. Hitachi reserves the right to make changes to this Material at any time without notice and assumes no responsibility for its use. The Materials contain the most current information available at the time of publication. Some of the features described in the Materials might not be currently available. Refer to the most recent product announcement for information about feature and product availability, or contact Hitachi Data Systems Corporation at Notice: Hitachi products and services can be ordered only under the terms and conditions of the applicable Hitachi agreements. The use of Hitachi products is governed by the terms of your agreements with Hitachi Data Systems Corporation. By using this software, you agree that you are responsible for: 1) Acquiring the relevant consents as may be required under local privacy laws or otherwise from authorized employees and other individuals to access relevant data; and 2) Verifying that data continues to be held, retrieved, deleted, or otherwise processed in accordance with relevant laws. Notice on Export Controls. The technical data and technology inherent in this Document may be subject to U.S. export control laws, including the U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations in other countries. Reader agrees to comply strictly with all such regulations and acknowledges that Reader has the responsibility to obtain licenses to export, re-export, or import the Document and any Compliant Products. Hitachi is a registered trademark of Hitachi, Ltd., in the United States and other countries. AIX, AS/400e, DB2, Domino, DS6000, DS8000, Enterprise Storage Server, eserver, FICON, FlashCopy, IBM, Lotus, MVS, OS/390, PowerPC, RS/6000, S/390, System z9, System z10, Tivoli, z/os, z9, z10, z13, z/vm, and z/vse are registered trademarks or trademarks of International Business Machines Corporation. Active Directory, ActiveX, Bing, Excel, Hyper-V, Internet Explorer, the Internet Explorer logo, Microsoft, the Microsoft Corporate Logo, MS-DOS, Outlook, PowerPoint, SharePoint, Silverlight, SmartScreen, SQL Server, Visual Basic, Visual C++, Visual Studio, Windows, the Windows logo, Windows Azure, Windows PowerShell, Windows Server, the Windows start button, and Windows Vista are registered trademarks or trademarks of Microsoft Corporation. Microsoft product screen shots are reprinted with permission from Microsoft Corporation. All other trademarks, service marks, and company names in this document or website are properties of their respective owners. ii

3 Contents Preface... xi Intended audience...xii Product version... xii Release notes...xii Document organization... xii Related documents... xiii Document conventions...xiv Conventions for storage capacity values...xv Accessing product documentation...xvi Getting help... xvi Comments... xvi 1 Introducing Global Link Manager About Global Link Manager Overview Features What's new? Global Link Manager components Terms and concepts Getting started Using Global Link Manager Road map Configuring a web browser Logging in and out Global Link Manager GUI window Reconfiguring the multipath management software operating environment Upgrading multipath management software on the host Changing the multipath management software device (LU) configurations of hosts Changing host connection targets or remote management client connection targets Replacing CHAs or CHA microprograms Viewing paths Setting paths according to I/O distribution iii

4 Managing I/O bottlenecks and path bandwidth Distributing I/O across multiple paths Responding to path errors Identifying and correcting path errors Path failover Path failback Path health check Managing users and permissions Overview Viewing a list of users Viewing individual user information Viewing a summary of user permissions Viewing a list of user permissions Adding users Editing user profiles Deleting users Deleting individual users Deleting multiple users Changing user passwords Changing user permissions Locking user accounts Unlocking user accounts Changing the method for user authentication Preparing to link to an external authentication server Changing the user authentication method Managing user profiles Overview Viewing user profiles Editing user profiles Changing login passwords Managing hosts Overview Viewing a list of hosts Viewing individual host information Adding hosts Preparing to add hosts Adding hosts manually Adding hosts by importing a CSV file Adding hosts using a "Scan Now" network scan Adding hosts using a "Scheduled Scan" network scan Removing hosts Refreshing host information Refreshing host information for a single host Refreshing host information for multiple hosts Refreshing a single host group Refreshing multiple host groups Refreshing all hosts connected to a CHA port iv

5 Multipath LU configuration Configuring multipath LUs for individual hosts Configuring multipath LUs for individual host groups Configuring multipath LUs for an individual storage system Configuring the HDLM operating environment for a host Configuring the HDLM operating environment for an individual host Configuring the HDLM operating environment for multiple hosts Configuring alerts for a host Managing resource groups Overview Viewing a list of resource groups Viewing individual resource group information Creating resource groups Editing resource groups Deleting resource groups Deleting individual resource groups Deleting multiple resource groups Adding hosts to a resource group Removing hosts from a resource group Adding users to a resource group Removing users from a resource group Managing host groups Overview Viewing a list of host groups Viewing individual host group information Creating host groups Editing host groups Deleting host groups Viewing host information for a host group Adding hosts to a host group Removing hosts from a host group Refreshing host information for host groups Refreshing a single host group Refreshing multiple host groups Managing paths Overview Viewing a summary of paths Viewing a summary of all paths Viewing a summary of paths for a single host Viewing a summary of paths for a host group Viewing a summary of paths for a storage system Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) Viewing a list of paths Viewing a list of paths for a single host Viewing a list of paths for a host HBA port Viewing a list of paths for a host group v

6 Viewing a list of paths for a storage system Viewing a list of paths for a CHA port of a storage system Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) Viewing a list of paths for a multipath LU Viewing a list of paths that have a specific status Filtering and viewing a list of paths Switching path status Switching paths online Switching paths offline Resetting the number of path I/O counts and I/O errors Viewing a list of storage systems Viewing individual storage systems information Viewing a list of physical storage systems (e.g. of a virtual storage machine) Viewing physical storage system information (e.g. of a virtual storage machine) Show list of lost paths Managing alerts Overview Viewing a list of alerts Viewing alert filtering Marking alerts as read Marking alerts as unread Deleting alerts Deleting all alerts Alert transfer settings Configuring the lost path check option Configuring to report alerts Displaying a list of addresses Adding an address Removing addresses Configuring an address Configuring the SMTP server Displaying resource group information for addresses Adding resource groups to an address Removing a resource group from an address Configuring alert types Managing licenses Overview Viewing license information Editing a license Setting security Overview Viewing conditions for passwords Changing conditions for passwords Viewing settings for automatic account lock vi

7 Changing settings for automatic account lock Viewing a preview of the warning banner Editing a warning banner Deleting a warning banner Exporting management information Overview Exporting to a CSV file Generating reports on path availability Overview Creating a report Creating a single host report Creating a multiple host report Creating a single host group report Creating a multiple host group report A GUI reference... A-1 Global Link Manager window... A-2 Global tasks bar area...a-2 Explorer menu...a-2 Dashboard menu...a-3 Global Link Manager subwindow... A-4 Subwindows for managing hosts... A-4 Hosts subwindow... A-4 Show Paths dialog box... A-9 Set Online dialog box...a-14 Set Online(D) dialog box...a-19 Set Offline dialog box... A-21 Add Hosts dialog box (adding to resources)...a-26 Network Scan Results (scan-type) dialog box... A-31 Network Scan Results Detail (scan-type) dialog box... A-31 Add Network Scan Schedule dialog box...a-33 Edit Network Scan Schedule dialog box...a-34 Delete Network Scan Schedule dialog box... A-36 Remove Hosts dialog box (removing from resources)...a-36 Refresh Hosts dialog box... A-36 Adds a Path Dynamically - host-name/deletes a Path Dynamically - host-name dialog box...a-38 Show Refresh Failed Hosts dialog box...a-40 Multihost Configuration wizard... A-40 Create Report dialog box... A-50 Show Hosts dialog box...a-52 host-name subwindow...a-52 storage-system-name dialog box... A-68 host-name dialog box... A-78 Reset I/O Count - host-name dialog box... A-87 Configure Multipath LUs dialog box...a-87 Configure HDLM - host-name dialog box... A-91 Storage System Setting Results dialog box... A-98 vii

8 Configure Alerts - host-name dialog box... A-99 Show Lost Paths - host-name dialog box... A-100 Filter - Paths dialog box... A-103 Subwindows for managing paths on storage systems... A-105 Storage systems subwindow...a-105 storage-system-name subwindow...a-107 storage-system-name dialog box (physical storage information)...a-121 Subwindows for managing paths on storage systems (physical storage information)... A-125 Storage systems subwindow (physical storage information)...a-125 storage-system-name subwindow (physical storage information)... A-126 Show Paths dialog box (physical storage information)... A-133 Set Online/Offline dialog box (physical storage information)... A-136 Refresh Hosts dialog box (host connected to a CHA port)... A-138 host-name dialog box (physical storage information)...a-139 storage-system-name dialog box (virtual storage machines information). A-143 Subwindows for managing host groups... A-147 Host Groups subwindow... A-147 Create Host Group dialog box...a-158 Delete Host Groups dialog box... A-159 Refresh Host Groups dialog box...a-159 host-group-name subwindow... A-160 Edit Properties - host-group-name dialog box... A-176 Add Hosts dialog box (adding to a host group)... A-176 Remove Hosts dialog box (removing from a host group)... A-177 Subwindows for managing users...a-177 Users and Permissions subwindow...a-177 Users subwindow... A-178 Add User dialog box...a-179 user-id subwindow...a-180 Edit Profile - user-id dialog box (editing a user profile)... A-182 Change Password - user-id dialog box (changing a user password)... A-183 Change Permission - user-id dialog box...a-183 Permissions subwindow... A-184 application-name subwindow...a-185 Subwindows for managing resource groups... A-186 Resource Groups subwindow...a-186 Create Resource Group dialog box... A-187 Delete Resource Groups dialog box...a-187 resource-group-name subwindow... A-188 Edit Properties - resource-group-name dialog box...a-190 Add Hosts dialog box (adding to a resource group)...a-190 Remove Hosts dialog box (removing from a resource group)... A-191 Add Users - resource-group-name dialog box... A-191 Remove Users dialog box...a-192 Subwindows for managing security options...a-193 Security subwindow...a-193 Password subwindow...a-193 Password dialog box...a-194 Account Lock subwindow... A-195 Account Lock dialog box... A-195 Warning Banner subwindow...a-196 viii

9 Edit Message dialog box...a-196 Subwindows for managing alerts...a-197 Alerts subwindow... A-197 Delete Alerts dialog box... A-204 Filter - Alerts dialog box...a-207 Configure Alert Transfer dialog box...a-209 Configure Lost Path Check dialog box... A-210 Notification dialog box... A-211 Add Address dialog box... A-212 Remove Addresses dialog box... A-212 Modify Address dialog box... A-212 Configure SMTP Server dialog box... A-213 Modify Resource Group dialog box...a-213 Add Resource Groups dialog box... A-214 Remove Resource Groups dialog box... A-214 Modify Alert Type dialog box... A-215 Subwindows for editing profiles... A-215 User Profile subwindow...a-215 Edit Profile - user-id dialog box (editing the logged-in user's profile)...a-217 Change Password - user-id dialog box (changing the logged-in user's password)...a-217 Subwindows for managing licenses... A-218 License Info subwindow...a-218 License, About, and Edit License dialog boxes... A-219 B of icons... B-1 Icon indicating host status...b-2 Icon indicating storage system status...b-2 Icon indicating host group status... B-3 Icon indicating port status...b-4 Icon indicating path status... B-5 C Functionality and version information for HDLM...C-1 Support status of the HDLM functions... C-2 HDLM version information... C-4 D Terms of multipath management products...d-1 Comparing terminology multipath management products... D-2 Acronyms and abbreviations Index ix

10 x

11 Preface This manual provides a system overview of Hitachi Global Link Manager (abbreviated hereafter to Global Link Manager) and explains how to use the system by using the GUI. Intended audience Product version Release notes Document organization Related documents Document conventions Conventions for storage capacity values Accessing product documentation Getting help Comments Preface xi

12 Intended audience This document is intended for system administrators who are using Global Link Manager to perform integrated management of hosts on which multipath management software is installed and perform operations and management of the storage system. This document assumes that the audience understands the following: Management functions of the multipath management software Management functions of the storage system Product version This document revision applies to Hitachi Global Link Manager v8.4.1 or later. Release notes Read the release notes before installing and using this product. They may contain requirements or restrictions that are not fully described in this document or updates or corrections to this document. Release notes are available on Hitachi Data Systems Support Connect: support.hds.com/en_us/documents.html. Document organization The following table provides an overview of the contents and organization of this document. Click the chapter title in the left column to go to that chapter. The first page of each chapter provides links to the sections in that chapter. Chapter/Appendix Chapter 1, Introducing Global Link Manager on page 1-1 Chapter 2, Getting started on page 2-1 Chapter 3, Managing users and permissions on page 3-1 Chapter 4, Managing user profiles on page 4-1 Chapter 5, Managing hosts on page 5-1 Chapter 6, Managing resource groups on page 6-1 Provides a functional overview and information about characteristics of Global Link Manager and explains Global Link Manager terminology. Explains the initial settings required to use Global Link Manager and the procedure to use this software. Describes the functions for managing users and explains how to use these functions. Describes the functions for managing user profiles and explains how to use these functions. Describes the functions for managing hosts and describes how to use these functions. Describes the functions for managing resource groups and explains how to use these functions. xii Preface

13 Chapter/Appendix Chapter 7, Managing host groups on page 7-1 Chapter 8, Managing paths on page 8-1 Chapter 9, Managing alerts on page 9-1 Chapter 10, Managing licenses on page 10-1 Chapter 11, Setting security on page 11-1 Chapter 12, Exporting management information on page 12-1 Chapter 13, Generating reports on path availability on page 13-1 Appendix A, GUI reference on page A-1 Appendix B, of icons on page B-1 Appendix C, Functionality and version information for HDLM on page C-1 Appendix D, Terms of multipath management products on page D-1 Describes the functions for managing host groups and describes how to use these functions. Describes the functions for managing paths and explains how to use these functions. Describes the functions for managing alerts and explains how to use these functions. Describes the functions for managing licenses and describes how to use these functions. Describes the functions for setting security options during login and explains how to use these functions. Describes the functions for batch output of Global Link Manager management information to a CSV file and explains how to use these functions. Describes the function used to output reports on path availability to a CSV file and explains how to use this function. Explains Global Link Manager windows and subwindows. Provides information about icons. Describes HDLM functions and explains version information. Provides information about the terminology related to multipath management products. Related documents The following related Hitachi Command Suite documents are available on the documentation CD: Hitachi Command Suite Global Link Manager Installation and Configuration Guide, MK-95HC107 Hitachi Command Suite Global Link Manager Messages, MK-95HC108 Hitachi Command Suite Dynamic Link Manager (for AIX) User Guide, MK-92DLM111 Hitachi Dynamic Link Manager User's Guide for HP-UX Systems, MK-92DLM112 Hitachi Command Suite Dynamic Link Manager (for Linux ) User Guide, MK-92DLM113 Hitachi Command Suite Dynamic Link Manager (for Solaris) User Guide, MK-92DLM114 Preface xiii

14 Hitachi Command Suite Dynamic Link Manager (for Windows ) User Guide, MK-92DLM129 Hitachi Command Suite Dynamic Link Manager (for VMware ) User Guide, MK-92DLM130 Hitachi Command Suite Installation and Configuration Guide, MK-90HC173 Hitachi Command Suite Administrator Guide, MK-90HC175 Hitachi Command Suite Tuning Manager Server Administration Guide, MK-92HC021 Hitachi Command Suite Tuning Manager User Guide, MK-92HC022 Document conventions This document uses the following typographic conventions: Convention Bold Indicates text in a window, including window titles, menus, menu options, buttons, fields, and labels. Example: Click OK. Indicates a emphasized words in list items. Italic Indicates a document title or emphasized words in text. Indicates a variable, which is a placeholder for actual text provided by the user or for output by the system. Example: pairdisplay -g group (For exceptions to this convention for variables, see the entry for angle brackets.) Monospace < > angled brackets [ ] square brackets Indicates text that is displayed on screen or entered by the user. Example: pairdisplay -g oradb Indicates a variable in the following scenarios: Variables are not clearly separated from the surrounding text or from other variables. Example: Status-<report-name><file-version>.csv Variables in headings. Indicates optional values. Example: [ a b ] indicates that you can choose a, b, or nothing. { } braces Indicates required or expected values. Example: { a b } indicates that you must choose either a or b. vertical bar Indicates that you have a choice between two or more options or arguments. Examples: [ a b ] indicates that you can choose a, b, or nothing. { a b } indicates that you must choose either a or b. This document uses the following icons to draw attention to information: xiv Preface

15 Icon Label Note Calls attention to important or additional information. Tip Provides helpful information, guidelines, or suggestions for performing tasks more effectively. Caution Warns the user of adverse conditions or consequences (for example, disruptive operations). WARNING Warns the user of severe conditions or consequences (for example, destructive operations). Conventions for storage capacity values Physical storage capacity values (for example, disk drive capacity) are calculated based on the following values: Physical capacity unit Value 1 kilobyte (KB) 1,000 (10 3 ) bytes 1 megabyte (MB) 1,000 KB or 1,000 2 bytes 1 gigabyte (GB) 1,000 MB or 1,000 3 bytes 1 terabyte (TB) 1,000 GB or 1,000 4 bytes 1 petabyte (PB) 1,000 TB or 1,000 5 bytes 1 exabyte (EB) 1,000 PB or 1,000 6 bytes Logical storage capacity values (for example, logical device capacity) are calculated based on the following values: Logical capacity unit Value 1 block 512 bytes 1 cylinder Mainframe: 870 KB Open-systems: OPEN-V: 960 KB Others: 720 KB 1 KB 1,024 (2 10 ) bytes 1 MB 1,024 KB or 1,024 2 bytes 1 GB 1,024 MB or 1,024 3 bytes 1 TB 1,024 GB or 1,024 4 bytes Preface xv

16 Logical capacity unit Value 1 PB 1,024 TB or 1,024 5 bytes 1 EB 1,024 PB or 1,024 6 bytes Accessing product documentation Product documentation is available on Hitachi Data Systems Support Connect: Check this site for the most current documentation, including important updates that may have been made after the release of the product. Getting help Hitachi Data Systems Support Connect is the destination for technical support of products and solutions sold by Hitachi Data Systems. To contact technical support, log on to Hitachi Data Systems Support Connect for contact information: Hitachi Data Systems Community is a global online community for HDS customers, partners, independent software vendors, employees, and prospects. It is the destination to get answers, discover insights, and make connections. Join the conversation today! Go to community.hds.com, register, and complete your profile. Comments Please send us your comments on this document: doc.comments@hds.com. Include the document title and number, including the revision level (for example, -07), and refer to specific sections and paragraphs whenever possible. All comments become the property of Hitachi Data Systems Corporation. Thank you! xvi Preface

17 1 Introducing Global Link Manager This chapter provides information you need to understand before using Global Link Manager: for example, the chapter provides an overview of the Global Link Manager system and explains key terms. Read this chapter before operating Global Link Manager. About Global Link Manager Introducing Global Link Manager 1-1

18 About Global Link Manager Overview Global Link Manager uses multipath management software path control functionality to provide integrated path management for large-sized system configurations. While multipath management software manages paths for a host, Global Link Manager batch-manages paths for multiple hosts. Global Link Manager supports the following multipath management software: HDLM (Hitachi Dynamic Link Manager) DMP (VxVM Dynamic Multipathing function) HP-UX Multipath When you use a large-sized system configuration containing many hosts, the workload for managing paths from each host grows in proportion to the size of the system. Global Link Manager enables you to reduce the workload by providing unified management of the path information for multiple hosts. Global Link Manager also helps you to improve system reliability, by switching path statuses while taking into account the balancing of workloads in the whole system, by enabling the reporting of error information (alerts) from each host, and by enabling you to quickly solve problems. Global Link Manager collects information about paths from multiple hosts on which multipath management software is installed, and the Global Link Manager server collectively manages this information. Collected information can be viewed and controlled by multiple users who manage the hosts from client machines. The following figure shows an example of a Global Link Manager system configuration. 1-2 Introducing Global Link Manager

19 Figure 1-1 Example of a Global Link Manager system configuration The following table lists the components that make up the Global Link Manager system. Table 1-1 System configuration components for Global Link Manager Component Global Link Manager server Global Link Manager client A management server on which Global Link Manager has been installed. A client used to run Global Link Manager. The Global Link Manager GUI is used via a Web browser to run a Global Link Manager client. Introducing Global Link Manager 1-3

20 Component SNMP transfer destination server SMTP server Remote management client Host SAN Storage system A transfer destination server for alerts managed by the Global Link Manager server. By specifying the transfer destination, alerts can be transferred to any SNMP management server after being received by the Global Link Manager server. An server used to alerts received by the Global Link Manager server. An instance of the Hitachi Command Suite Common Agent Component that connects to and controls a host via a LAN. Also refers to the computer on which the component is installed. A remote management client is required when you use Global Link Manager to manage the VMware edition of HDLM. We recommend that each remote management client should not manage more than 10 hosts. A host on which the multipath management software is installed and that is managed by Global Link Manager. If your OS is VMware, the host is the server running the ESXi Hypervisor. Functions are executed by operating remote multipath management software from Global Link Manager. For HDLM versions earlier than 5.8, a Device Manager agent is required to operate HDLM from Global Link Manager. For DMP or HP-UX multipath, a Global Link Manager agent is required to operate the multipath management software from Global Link Manager. A dedicated network used for data transfer by the host machine and storage system. An external storage device connected to a host machine. Related topics Features on page 1-4 Global Link Manager components on page 1-6 Terms and concepts on page 1-8 Features Global Link Manager includes the following features: Collective Management of Path Information of Multiple Hosts By using remote operations from the Global Link Manager GUI, you can collectively set up multiple hosts and collect information from the multipath management software on multiple hosts. Operations can be managed from one console without having to log in to each host. Since multiple hosts can be managed collectively, the user can view the path information for hosts, HBA ports, storage systems, CHA ports, or by path status. Summarizing the Path Statuses for the Whole System 1-4 Introducing Global Link Manager

21 What's new? Global Link Manager can also display a summary of path statuses (the number of paths in each status). You can check path availability in the entire system without having to check the status of each host individually. Support for Path Bandwidth Control Global Link Manager enables you to specify the format for viewing path information, such as by storage system or by CHA port. You can also use Global Link Manager to adjust the bandwidth of paths (the actual number of online paths) among multiple user applications or hosts. Collective Management of Error Information from Multiple Hosts To quickly detect an error that occurs on a host in a multi host system and take appropriate action, you need to set up the environment so that it informs you of the error cause and location. To facilitate collective management, you can set up Global Link Manager so that path error information (detected by the multipath management software on each host) is reported to you as alerts. You can use an application of your choosing to manage alert information that was transferred from the Global Link Manager server to another SNMP management server. Related topics Overview on page 1-2 Global Link Manager components on page 1-6 Terms and concepts on page 1-8 The following is the principal new functionality in Global Link Manager v8.4.1: Support of Firefox ESR 45: Firefox ESR 45 is now supported in the following OSs. - Red Hat Enterprise Linux Red Hat Enterprise Linux Red Hat Enterprise Linux Red Hat Enterprise Linux Red Hat Enterprise Linux 7 - Red Hat Enterprise Linux Red Hat Enterprise Linux 7.2 Support of Chrome: Chrome is now supported in the following OS. - Windows Windows 10 Tip: Readme and Release Notes Contents: These files can be found on the installation DVD-ROM. They contain requirements and notes for use of Hitachi Global Link Manager that may not be fully described in this Help. Please review these files before installing the product. Introducing Global Link Manager 1-5

22 Global Link Manager components The Global Link Manager system consists of the following components: Global Link Manager server Global Link Manager Hitachi Command Suite Common Component HiRDB Global Link Manager client Web browser Remote management client (when the host OS is VMware) HDLM Hitachi Command Suite Common Agent Component HDLM host HDLM Device Manager agent (when the HDLM version is earlier than 5.8) Hitachi Command Suite Common Agent Component (when the HDLM version is 5.8 or later, and the host OS is not VMware) DMP host DMP Global Link Manager agent HP-UX multipath host HP-UX multipath Global Link Manager agent SNMP transfer destination server SNMP management application The following figure shows the structure of the components: 1-6 Introducing Global Link Manager

23 Figure 1-2 Structure of the components Global Link Manager Global Link Manager collects information from hosts, and sets up hosts. Hitachi Command Suite Common Component Hitachi Command Suite Common Component provides Hitachi Command Suite products server functionality and the basic functionality of the GUI. Hitachi Command Suite Common Component is installed as part of Global Link Manager, Device Manager, Tuning Manager, and other Hitachi Command Suite server products, and is always updated to the latest version. Introducing Global Link Manager 1-7

24 HiRDB HiRDB is a relational database that manages the Global Link Manager information. Web browser The user uses the Global Link Manager GUI via a Web browser. HDLM, DMP, or HP-UX multipath HDLM, DMP, and HP-UX multipath manage the paths between hosts and storage systems. HDLM, DMP, and HP-UX multipath can also be used to balance the loads on paths and to switch paths if a problem occurs. Device Manager agent A Device Manager agent is software required for communicating with the Global Link Manager server when the version of HDLM installed on the host is earlier than 5.8. Hitachi Command Suite Common Agent Component Hitachi Command Suite Common Agent Component, which is included in HDLM, is a component required for communicating with the Global Link Manager server when the version of HDLM installed on the host is 5.8 or later. When the host OS is VMware, this component is installed on the remote management client. Otherwise, it is installed on the host where HDLM is used. Global Link Manager agent The Global Link Manager agent is software required for communicating with the Global Link Manager server when DMP, or HP-UX multipath is used on a host. SNMP management application An application that manages alert information transferred from the Global Link Manager server by SNMP traps. Transfer of alert information from the Global Link Manager server is optional. For information on system requirements for Global Link Manager, such as supported operating systems and prerequisite programs, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Related topics Overview on page 1-2 Features on page 1-4 Terms and concepts Terms and concepts on page 1-8 This section describes the following terms and concepts that should be understood when operating Global Link Manager: Resources on page Introducing Global Link Manager

25 Resource groups on page 1-9 User management types and permissions on page 1-9 Host groups on page 1-11 Paths on page 1-12 Multipath LUs on page 1-15 CHA ports on page 1-15 HBA ports on page 1-16 Load balancing on page 1-16 Resources Resources indicate hosts managed by Global Link Manager or storage systems connected to the hosts. When you use the Global Link Manager graphical-user interface (GUI) to add a host, you can view information about that host's paths and connected storage systems from Global Link Manager. Resource groups Resource groups indicate a group of resources that are grouped by task or other criteria and associated with users to limit the range of resources accessed by users. Users who manage a wide range of resources can be associated with multiple resource groups in order to extend their range of operations. User management types and permissions To control access, Global Link Manager uses resource groups that restrict operation scope, management types that restrict user operations, and user permissions. Two different types of users operate Global Link Manager, as indicated in the following table: Table 1-2 User management types Management type User management Global Link Manager management User who manages all users common to all Hitachi Command Suite products. This type of user can specify settings for user IDs, permissions, and other information for Hitachi Command Suite product users. User who manages Global Link Manager resources and information that belongs to those resources, such as paths. The following table lists the user permissions associated with the user types. All users can manage their user profiles and Global Link Manager licenses regardless of their permissions. Introducing Global Link Manager 1-9

26 Table 1-3 User permissions Management type Permissions User management Admin Allows a user to log in to all Hitachi Command Suite products and to set up the users common to all Hitachi Command Suite products. Global Link Manager management Admin Modify View Allows a user to access all Global Link Manager resources and execute all tasks other than those for user management. Allows a user to manage resources and paths and outputs that information to CSV files within a resource set by a user who has Admin (Global Link Manager management) permission. Allows a user to view resources and paths within a resource set by a user who has Admin (Global Link Manager management) permission. Initially, Global Link Manager comes with a built-in account that has an ID called System that can manage all users and products. This user ID and its permissions cannot be changed or deleted. By default, a user who has the Admin (user management) permission (other than the built-in account with the user ID System), cannot perform any Global Link Manager operations other than those for user management. Only the built-in account user System can perform such operations. To use Global Link Manager, the user must specify the desired Global Link Manager management permission. After a user with Admin (user management) permission sets up Global Link Manager users, users with Admin (Global Link Manager management) permission (who are allowed to access all resources) can set up resource groups. Among the Global Link Manager management users, the users with permissions other than the Admin permission can use the GUI to: View only the hosts within an associated resource group, the paths to the hosts, and the storage systems connected to the hosts. Perform operations on the above hosts, paths, and storage systems according to their user permissions. The following figure uses an example to show the relationship between resource groups and user permissions: 1-10 Introducing Global Link Manager

27 Figure 1-3 Relationship between resource groups and user permissions Host groups A host group is a group of Global Link Manager managed hosts that is created according to the user's goals and desired tasks. To simplify management of multiple hosts and paths, each user who can perform Global Link Manager management classifies the managed hosts (hosts that exist in the assigned resource group) into the desired groups. Host groups can be layered in a hierarchical structure, and a single host can belong to multiple host groups. The following figure uses an example to show an overview of host groups: Introducing Global Link Manager 1-11

28 Figure 1-4 Overview of host groups Paths A path that connects a host to a storage system for data I/Os. When the host operating system is Linux or Solaris, the number of paths displayed in the Global Link Manager GUI is the same as the number of physical paths (which is the same as the number of LUs recognized by the SCSI driver), even though there are as many paths as there are partitions (slices). For a host running Linux, Solaris 8, Solaris 9, Solaris 10, or Solaris 11, these numbers are the same because a path ID is assigned for each physical path. For a host running Solaris 7, these numbers are the same because information about the path IDs assigned to each slice is summarized, and only the minimum required information is displayed in the Global Link Manager GUI (totals for the number of I/O counts and I/O errors on the paths are displayed). The following table describes the path statuses that Global Link Manager manages Introducing Global Link Manager

29 Table 1-4 Path status for HDLM Path status Online Offline(C) Offline(E) Online(E) #2 Online(S) This status enables I/Os to be issued normally. Users can perform offline operations on a path that has the Online status. When the host operating system is Windows and the host is in a cluster configuration, this status includes paths that have the Online(P) status (a path connected to an LU in reserve processing, and waiting for execution of offline processing). Note that paths that have the Online status are checked by the lost path check option. A path that is in an offline state due to an offline operation on the path. Users can perform online operations on a path that has the Offline(C) status. Note that paths that have the Offline(C) status are checked by the lost path check option. A path that is in an offline state because the host's HDLM has detected an error. Users can perform offline operations or (after error recovery) online operations on a path that has the Offline(E) status. If HDLM's automatic failback function #1 is enabled, the path automatically returns to the Online status after error recovery is confirmed. When the host operating system is Windows and the host is in a cluster configuration, this status includes paths that have the Offline(P) status (a path connected to an LU in reserve processing, and waiting for execution of offline processing). A path has been taken offline because the host's HDLM has detected an error on all paths associated with a specific logical unit (LU). In this case, one of the paths is placed in Online(E) status, with the others placed in Offline(E) status. While the error persists, the status of paths accessing that LU changes between Online(E) and Offline(E) so that one path is always in Online(E) status. After recovering from the error, you can perform online operations on the path that has Online(E) status. If the HDLM automatic failback function is enabled, paths return to Online status when HDLM detects that the error has been resolved. When the host operating system is Windows and the host is in a cluster configuration, this status includes paths in Online(EP) status (a path to a reserved LU waiting for execution of offline processing) The path error of the primary volume (P-VOL) in the HAM environment has been resolved, but I/O to the P-VOL is being suppressed. Paths with the Online(S) status are displayed when HDLM is used as multipath management software, and when true is set for the gui.physical.view properties in the server.properties file for Global Link Manager server. When false is set, the paths are displayed as paths with the Offline(E) status. For details about Introducing Global Link Manager 1-13

30 Path status Online(D) the gui.physical.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. The path error of the primary volume (P-VOL) in the HAM environment has been resolved, but I/O to the P-VOL is being suppressed. If an error occurs on all the paths on the secondary volume (S-VOL), the P-VOL paths automatically change to the Online status. To change to the Online(D) status, specify the status in the dialog box for setting Online(D). Paths with the Online(D) status are displayed when HDLM is used as multipath management software, and when true is set for the gui.physical.view properties in the server.properties file for Global Link Manager server. When false is set, the paths are displayed as paths with the Offline(E) status. For details about the gui.physical.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. #1 #2 If the host operating system is VMware, for details about the automatic failback function see the manual of the version of HDLM being used. When the host OS is VMware, paths do not change to Online(E) status, and paths in Online(E) status are not displayed. Table 1-5 Path status for DMP Windows Healthy Path status Unhealthy This status enables I/O to be issued normally. Note that paths that have the Healthy status are checked by the lost path check option. A path that is in an offline state because the host's DMP has detected an error. When Windows Plug and Play detects an error, the path where the error occurred is deleted. If a host detects that error before the path is deleted, the path's status is changed to Unhealthy. After the host has been recovered, update the host information to change the status back to Healthy. Table 1-6 Path status for HP-UX multipath Online Path status This status enables I/Os be issued if a path has the Online status. If a path has the standby status, I/Os cannot be issued. The status of a path for HP-UX multipath is online or standby. Users can perform offline operations on a path that has the Online status Introducing Global Link Manager

31 Path status Offline(C) Offline(E) Note that paths that have the Online status are checked by the lost path check option. A path that is in an offline state due to an offline operation on the path. The status of a path for HP-UX multipath is disable. Users can perform online operations on a path that has the Offline(C) status. Note that paths that have the Offline(C) status are checked by the lost path check option. A path is in offline status because a path error(offline) or a lunpath authentication error(unusable) # was detected in the path. The status of a path for HP-UX multipath is offline or unusable. # If you want to change the device and use it, you need to perform operations for re-authentication. After performing re-authentication operations, you can use Global Link Manager to set Online status. For details about re-authentication operations, see the HP-UX manual. Multipath LUs If there are multiple paths for one LU, the multipath management software creates a corresponding device by integrating as many existing SCSI devices as the number of physical paths. Each host application uses the device corresponding to the multipath management software to access the LU in a storage system. Multipath LUs are expressed by the logical device file of the multipath management software device or the name of the assigned disk drive. In the Global Link Manager GUI, this is displayed as shown in the table below. Table 1-7 Displayed multipath LU information Host environment Display HDLM DMP (Windows) HP-UX multipath HDev name Disk name LUN hardware path CHA ports This is an adapter that controls channels on a storage system. When you are using DMP in Windows, this is displayed as a target. When you are using HP- UX multipath, this is displayed as a target address. Introducing Global Link Manager 1-15

32 HBA ports This is an interface device that connects a host and an external device. When you are using DMP in Windows, this is displayed as a port/channel. When you are using HP-UX multipath, this is displayed as an HBA path. Load balancing If there are multiple paths that access an LU area, this functionality balances loads on the paths by executing I/O on multiple paths. When you are using DMP in Windows, this is displayed as a load balancing policy. The following table shows the correspondence of terms between HDLM and HP-UX multipath: Table 1-8 Correspondence of terms between HDLM and HP-UX multipath HDLM HP-UX multipath LDEV LUN ID Storage System Name Storage Subsystems CHA Multipath LU HBA HBA WWN I/O Count I/O Errors Path ID Path Name Target address LUN hardware path H/W Path Port name Total I/Os processed I/O failures lunpath ID lunpath hardware path Related topics Overview on page 1-2 Features on page 1-4 Global Link Manager components on page Introducing Global Link Manager

33 2 Getting started This chapter describes an example of Global Link Manager operation. This chapter also describes the workflows for specifying initial user and resource settings, changing the configuration of the multipath management software operating environment, maintaining storage systems, and collectively managing the paths set up between hosts and storage systems. Using Global Link Manager Reconfiguring the multipath management software operating environment Replacing CHAs or CHA microprograms Viewing paths Setting paths according to I/O distribution Responding to path errors Getting started 2-1

34 Using Global Link Manager Road map This section explains the entire flow of tasks from setup to operation. This section also explains the settings required to start the operation, and the procedural steps to log in to Global Link Manager. This road map summarizes how to use Global Link Manager. The following steps assume that: Multipath management software has been installed and the multipath management software environment has been set up. Global Link Manager has been installed and the Global Link Manager environment has been set up. If DMP or HP-UX multipath is used on a host, then the Global Link Manager agent has been installed and the Global Link Manager environment has been set up. Global Link Manager licenses have been set up during the initial login. Specify Global Link Manager users. Users who manage Global Link Manager are specified by a user who has the Admin (user management) permission. a. Add Global Link Manager users. b. Specify permissions for registered users. Register hosts as Global Link Manager resources. To use Global Link Manager to facilitate integrated management of paths managed by multipath management software, you must register the hosts on which the multipath management software is installed in Global Link Manager. a. Add hosts. Alert notification is automatically set, by default, for all registered hosts. To change the alert setting for a host, you must set the server.snmp.auto_set property to false in the Global Link Manager server's server.properties file. For details about how to edit the properties file, see the Hitachi Command Suite Software Installation and Configuration Guide. b. Set the operating environment for hosts. For details about how to set the operating environment for registered hosts, see Configuring alerts for a host on page If you are using HDLM, also see the following sections: - Multipath LU configuration on page Configuring the HDLM operating environment for a host on page 5-28 For details about how to set up load balancing for an individual LU and how to configure the operating environment, see the VxVM documentation. 2-2 Getting started

35 Tip: Note the following when you register hosts as Global Link Manager resources: If you are using multipath management software in a cluster configuration, you must individually register all of the hosts that make up the cluster. Note that, in the Global Link Manager graphical-user interface (GUI), the registered hosts will be displayed by their host names regardless of whether the hosts make up the cluster. If necessary, specify the required settings for each host. You cannot run multiple types of multipath management software on one host at the same time. Control user access to the hosts. You can limit the range of resources (hosts) that can be manipulated by each user by creating resource groups and assigning users to them. When a user logs in using the Global Link Manager, only the assigned host is displayed. a. Add resource groups. b. Add hosts in a resource group. c. Add users in a resource group. If necessary, change the configuration of the host's multipath management software environment. If necessary, upgrade the version of the multipath management software on the host and change the storage system's LU configuration. For details on how to change the configuration of a multipath management software environment,see the following sections: Upgrading multipath management software on the host on page 2-12 Changing the multipath management software device (LU) configurations of hosts on page 2-12 Changing host connection targets or remote management client connection targets on page 2-13 Tip: You cannot run multiple types of multipath management software on one host at the same time. Replace the storage system CHAs or microprograms, if necessary. If necessary, perform maintenance on the storage system CHAs or the CHA microprograms. For details about how to replace CHAs or CHA microprograms, see Replacing CHAs or CHA microprograms on page Perform integrated path management by using Global Link Manager. Perform integrated management of paths set between the host and storage system by distributing the workload for the paths and correcting path errors. For details about the procedure used for path management, see the following sections: Getting started 2-3

36 Viewing paths on page 2-17 Managing I/O bottlenecks and path bandwidth on page 2-19 Identifying and correcting path errors on page 2-21 Guidelines for maximum number of Global Link Manager management targets and batch operations The management targets used in operating Global Link Manager include the hosts to be registered, the paths that belong to the hosts, the resource groups, and the host groups to be set for managing hosts. The maximum number of each of these targets is explained in the following table. Table 2-1 Guidelines for maximum number of Global Link Manager management targets Management target type Maximum number Hosts 1500 Host groups 100 Resource groups 100 Multipath LUs #1# Paths #1#2# Lost paths (for a host) 1024 #1 #2 #3 For the maximum numbers of multipath LUs and paths per host, use the following formula: maximum-number-of-multipath-lus-or-paths / number-of-managementtarget-hosts If DMP or HP-UX multipath is used on the host, you also need to take into account the maximum number when DMP or HP-UX multipath is used. If acquisition of path availability information (path status log) for a host is enabled to output reports on path availability information, set approximately 1000 for the maximum number of paths per host on which HDLM version 5.9 or later is running. By default, acquisition of path availability information (path status log) for a host is disabled. To change the acquisition setting, use the server.pathreport.enable property in the server.properties file of the Global Link Manager server. For details about the server.pathreport.enable property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. The following table lists the maximum number of paths and LUs per host when using DMP or HP-UX multipath. 2-4 Getting started

37 Table 2-2 Guidelines for maximum number when using DMP or HP-UX multipath Multipath management software Maximum number of paths Maximum number of multipath LUs DMP (Windows) HP-UX Multipath The following table explains maximum numbers for each operation when operating Global Link Manager in batch mode. Table 2-3 Guidelines for maximum number when operating in batch mode Operation Add hosts (import a CSV file in batch mode) Refresh host information Set multipath LU Multi Host Configuration Switch path status (online or offline operation) Maximum number 100 (hosts) 100 (hosts) 100 (multipath LUs) 100 (hosts) 100 (paths) Related topics Managing Users and Permissions Adding hosts on page 5-5 Managing Resource Groups Outputting Reports on Path Availability Configuring a web browser If a warning message is display stating that a pop-up window in the Global Link Manager GUI is being blocked, you can change the settings so that popup windows are always displayed. You can also display pop-up windows by registering the Global Link Manager product URL as a trusted site ahead of time. If SSL/TLS is used to communicate between the management server and clients, use the SSL version of URL in the pop-up blocker settings. Information to collect in advance IP address or host name of the Global Link Manager server Port number of the Global Link Manager server You can use the server.https.port property in the server.properties file on the Global Link Manager server to check the port number of the server. Getting started 2-5

38 For details about these properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To disable the pop-up blocker: 1. In the pop-up blocker settings of the browser, register the following URL as the address of the website to allow: For SSL communication: For non-ssl communication: Reference: URL for communication with the Global Link Manager server: Link-Manager-server-port-number/ Non-SSL example GlobalLinkAvailabilityManager/ SSL example GlobalLinkAvailabilityManager/ To stop the Global Link Manager pop-up windows from being displayed in the background, specify settings so that pop-up windows are not displayed in a new tab. To configure the options in Internet Explorer: If you are using Internet Explorer to use the GUI of Global Link Manager, configure the settings to communicate with the Global Link Manager server. The settings are optional for items that are not listed below: 1. Start Internet Explorer. 2. On the Tools menu, click Internet Options. 3. When the Internet Options dialog box appears, click the Security tab. 4. Click the Custom Level of the Trusted sites. 5. When the Security Settings dialog box appears, configure your browser to use the configuration settings below. Table 2-4 Configuration settings Items to be set Setting value Run ActiveX controls and plug-ins Script ActiveX controls marked safe for scripting Active scripting Enable Enable Enable 2-6 Getting started

39 Items to be set Launching programs and files in an IFRAME Submit non-encrypted form data File download Allow Web sites to prompt for information using scripted windows Setting value Prompt or Enable Prompt or Enable Enable Enable 6. On the Privacy tab of the Internet Options dialog box, enable cookies. 7. On the Advanced tab of the Internet Options dialog box, select Warn about certificate address mismatch and Show pictures. 8. When you finish, click OK until you exit all dialog boxes. Note: Note that when using Internet Explorer in Windows Server 2008 or Windows Server 2012, if the loading animation does not start or if files cannot be downloaded from a server for which HTTPS is enabled, disable Internet Explorer Enhanced Security Configuration. Related topics Logging in and out on page 2-8 Global Link Manager GUI window on page 2-9 Tip: Set the Web browser locale to match the operation. Set the Web browser page caching to show the latest information every time the page is accessed. Set the font size to Medium or Larger. If you set the font size to Largest, characters might overlap when displayed. Enable Enhanced Protection Mode in Internet Explorer 10. To configure the options in Firefox: If you are using Firefox to use the GUI of Global Link Manager, configure the settings to communicate with the Global Link Manager server. The settings are optional for items that are not listed below: 1. Start Firefox. 2. In the Options dialog box, perform the following settings: Enable cookies Set images to be loaded automatically Enable JavaScript Register the IP address of the GUI of Global Link Manager as a site for which pop-ups are allowed Getting started 2-7

40 Note: Make sure that the language settings in the web browser and X-terminal are the same. If the language settings differ, character strings might not be displayed correctly in the title bar. Do not change the default setting for the font size. If the font size is increased, characters might overlap when displayed. Logging in and out Licenses need to be registered after Global Link Manager is installed in order for users to log into Global Link Manager. For details about how to install Global Link Manager and set up licenses, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To log in: 1. In the Web browser's address bar, enter the login URL. This URL follows the syntax: Link Manager-server # :portnumber-for-hbase64 Storage-Mgmt-Web-Service-of-the-Global Link Manager-server/GlobalLinkAvailabilityManager/. Example: After the Back To Login window appears, the User Login window appears automatically. #:When specifying an IP address in IPv6 format, enclose the IP address in square brackets ([ ]). If you are using Firefox in an IPv6 environment, you cannot use an IPv6 address in the URL for Global Link Manager. To use Firefox and establish an IPv6 connection, specify the IPv6 IP address and host name of the Global Link Manager server in the hosts file, and then use the host name to access Global Link Manager. 2. Enter the user ID and password. To specify a Global Link Manager user when you log in to Global Link Manager for the first time, log in as the built-in account user (the default user who has the Admin (user management) permission). Use the user ID and password given below (default). If you have already used another Hitachi Command Suite product and have changed the password, use the new password. If you enabled authentication using an external authentication server, use the password registered in that server. Logging in as the built-in account user User ID: System Password: manager (default) Tip: For security reasons, a user's account may be locked automatically if the user fails to log in successfully after a certain number of unsuccessful attempts. A user with Admin (user management) permission sets whether login automatic account lock is to be enabled and, if so, the number of consecutive login failures that will cause an account to be locked. 2-8 Getting started

41 3. Click the Login button. The initial window of the Global Link Manager GUI appears. To log out and end the Global Link Manager GUI: 1. Click the Logout button in the Global Link Manager GUI window. The Global Link Manager GUI terminates, and you are logged out. Related topics Changing settings for automatic account lock on page 11-5 Unlocking user accounts on page 3-11 Configuring a web browser on page 2-5 Global Link Manager GUI window on page 2-9 Global Link Manager GUI window All Global Link Manager tasks are performed from the Global Link Manager graphical-user interface (GUI) window. The following figure shows the Global Link Manager GUI window and its components. The following figure shows the window organization of the Global Link Manager GUI: Figure 2-1 Window organization of the Global Link Manager GUI Getting started 2-9

42 For more information about the Global Link Manager GUI window components, click the component below: Global tasks bar area Displays the Global Link Manager menus, action buttons, the previous login time, and information about the user who is logged in. In the global tasks bar area, you can toggle between viewing and hiding the Explorer menu and Dashboard menu areas, output Global Link Manager management information to a CSV file, close a window, log out of Global Link Manager, view Help, and view the version and license information. Explorer menu Displays Global Link Manager task menu items. Choosing a menu item displays the corresponding information in the navigation and application areas. Dashboard menu Displays a list of Hitachi Command Suite products. A product shown in the active mode can be started by using the GO link. The number of unconfirmed alerts among the alerts related to a path error appears under HGLM. The number of unconfirmed alerts is updated when an automatic refresh occurs or when an operation such as setting an alert to read is performed in the Alerts subwindow. The default refresh interval for the display in the Dashboard menu is one minute. To change the interval, specify the desired interval in the gui.indicator.auto_refresh_interval property in the Global Link Manager server's server.properties file. For details about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Application bar area Displays the name of the item selected in the Explorer menu, corresponding action buttons, and the button that toggles between viewing and hiding the navigation area. Navigation area Displays, in a tree format, the objects that belong to the item selected in the Explorer menu. Clicking the Refresh Tree button updates the information in the navigation area and the application area. Object tree Displays objects in the navigation area, in a tree format. Expanding the object tree and choosing a desired object displays information about object-name in the application area. Application area Displays information corresponding to the object chosen from the object tree or the Explorer menu. Subwindow A window displayed within the application area is called an object-name subwindow Getting started

43 Dialog box A popup window displayed by clicking an action button is called an actionname dialog box. Note: Observe the following guidelines about the GUI window: In a dialog box with tabbed pages, the contents you enter in a tabbedpage are cleared when you change tabs. Complete an operation in a tabbed-page before changing tabs. When you close a dialog box, use the Close button in the Global Link Manager GUI. If you close a dialog box by another browser operation, the results of operations performed in that dialog box are not applied to the navigation area and application area when the dialog box is closed. On rare occasions, a GUI window on a browser of a client machine becomes either of the following conditions, or the management information is not displayed, or both: The GUI window becomes white and displays nothing. Although the GUI window does not become white, the management information is not displayed correctly. Depending on the operation timing, browser error occurs and the following procedure can not be performed. In this case, perform the following procedures to recover: Press the F5 key to refresh the information displayed on the browser. If the management information is not displayed correctly even after refreshing the browser, display the login dialog box and log in again. The Internet Explorer might cause application error on rare occasions. In this case, invoke the Internet Explorer again and re-log in to Global Link Manager. Depending on the version of Windows and Internet Explorer, File Download dialog may appear again after the Open button is clicked on the File Download dialog. The file is downloaded correctly by clicking Open or Save on the secondly reappeared dialog. Related topics Global tasks bar area on page A-2 Explorer menu on page A-2 Dashboard menu on page A-3 Logging in and out on page 2-8 Configuring a web browser on page 2-5 Getting started 2-11

44 Reconfiguring the multipath management software operating environment This section explains the procedures to change the operating environment for the multipath management software on the host. For example, this section explains the procedure to upgrade the multipath management software version of the host, and the procedure to change the configurations of the LUs in a storage system that are accessed from a managed host. Upgrading multipath management software on the host This subsection describes the procedure for upgrading the multipath management software version of hosts managed by Global Link Manager. To upgrade the multipath management software version of hosts: 1. Check the multipath management software version of all the hosts being managed by viewing the summary of multipath management software versions in the list of hosts. 2. On the host that contains the multipath management software version to be upgraded, install the new version of multipath management software. see the multipath management software documentation. Tip: Before installing a new version of HDLM on a host where a version of HDLM earlier than 5.8 is installed, stop the service or the daemon process of the Device Manager agent. see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide. 3. Refresh the host to apply the updated multipath management software information to Global Link Manager. Related topics Viewing a list of hosts on page 5-4 Refreshing host information on page 5-15 Changing the multipath management software device (LU) configurations of hosts on page 2-12 Changing host connection targets or remote management client connection targets on page 2-13 Changing the multipath management software device (LU) configurations of hosts Use the following general procedure to change the configuration of the LUs in a storage system that are accessed from a host managed by Global Link Manager, and the configuration of the devices corresponding to the multipath management software (disk devices when the host operating system is Windows). To change the configuration of an LU: 2-12 Getting started

45 1. On each host, change the configuration of the multipath management software devices (disk devices) that correspond to the LU. see the multipath management software documentation. 2. Refresh the host to apply the updated multipath management software information to Global Link Manager. Related topics Refreshing host information on page 5-15 Upgrading multipath management software on the host on page 2-12 Changing host connection targets or remote management client connection targets on page 2-13 Changing host connection targets or remote management client connection targets You will need to re-register a host in the following circumstances: You change the IP address of a host managed by Global Link Manager. You change one of the following port numbers: HDLM versions of the host are earlier than 5.8: the port number for the port specified in the following properties in the server.properties file of the Device Manager agent: - server.agent.port property (agent service port) - server.http.port property (remote port) For information about the server.properties file of the Device Manager agent, see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide. On a host running HDLM version 5.8 or later on an OS other than VMware or on a host using DMP or HP-UX multipath as the multipath management software: the port number specified in the server.agent.port property (agent service port) of the server.properties file of the Hitachi Command Suite Common Agent Component. For information about the server.properties file of Hitachi Command Suite Common Agent Component, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. You change the connection target of the remote management client, when the host operating system is VMware and the multipath management software is HDLM. Tip: When acquisition of path availability information (path status log) for a host is enabled in order to output a report that uses the path availability information, if you change the IP address or port number of a host on which HDLM version 5.9 or later is running, the path availability information before the change will be deleted. Getting started 2-13

46 By default, acquisition of path availability information (path status log) for a host is disabled. To change the acquisition setting, use the server.pathreport.enable property in the server.properties file of the Global Link Manager server. For details about the server.pathreport.enable property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To change the IP address, port number, or remote management client connection target: 1. From Global Link Manager, temporarily delete the host whose IP address, port number, or remote management client connection target you want to change. After you do this, the host will no longer be managed by Global Link Manager. 2. Change the IP address, port number, or remote management client connection target. To change the port number, edit the server.properties file of the Device Manager agent or Hitachi Command Suite Common Agent Component. To change the remote management client properties, go to step Restart the Device Manager agent or Hitachi Command Suite Common Agent Component. If the HDLM version of the host is earlier than 5.8, see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide. If the HDLM version of the host is 5.8 or later, on an OS other than VMware or on a host using DMP or HP-UX multipath as the multipath management software, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. 4. In Global Link Manager, re-register the deleted host with the new IP address, port number, or remote management client connection target. 5. Set up an operating environment for the host. If you are using HDLM: Multipath LU configuration (configuring loadbalancing and dynamic I/O path control at the LU level). Configuring the HDLM operating environment for the host. For details about how to set up load balancing for an individual LU and how to configure the operating environment, see the VxVM manual. For details about how to set up load balancing for an individual LU of HP- UX multipath and how to configure the operating environment, see the HP-UX documentation. Related topics Outputting Reports on Path Availability Removing hosts on page 5-15 Adding hosts on page 5-5 Multipath LU configuration on page Getting started

47 Configuring the HDLM operating environment for a host on page 5-28 Configuring alerts for a host on page 5-32 Upgrading multipath management software on the host on page 2-12 Changing the multipath management software device (LU) configurations of hosts on page 2-12 Replacing CHAs or CHA microprograms By using alternate paths, you can perform maintenance of storage system CHAs and CHA microprograms while the system is running. However, to do so, all of the paths, including the alternate paths, must be online. From the host multipath management software, checking all of the target paths along with their alternate paths is tedious. However, Global Link Manager enables you to check the paths to all of the hosts from a particular CHA port, which reduces the preparation work needed before performing the replacement. The following figure shows an example of checking alternate paths when replacing CHA: Getting started 2-15

48 Figure 2-2 Checking alternate paths with and without using Global Link Manager To replace a CHA or a CHA microprogram: 1. In the CHA ports, or Targets of the Storage-system-Name subwindow, select all of the CHA ports belonging to the CHA you want to replace, or select all of the CHA ports belonging to the cluster of the microprogram you want to replace, and then update the information for the connected hosts. 2. Make sure that all of the paths of the CHA port selected in step 1 are online. When replacing a CHA or a microprogram, to avoid having to shut down the entire system due to inadvertently stopping CHAs or clusters that you do not plan to replace, place all target and alternate paths in online status Getting started

49 3. Make sure that alternate paths exist for the CHA port selected in step 1. You can check the alternate paths in the Set Offline dialog box. When you display paths in the Set Offline dialog box, if there is a path that cannot be placed offline because no alternate path exists (if all online paths that access a particular LU would be lost), the applicable path is highlighted. If this occurs, stop the operation and check the target path, and then perform the operation again. 4. Replace the CHA or the CHA microprogram. For details about how to perform this replacement, see the maintenance documentation that is provided with the storage system. 5. To obtain the latest information after the replacement, update the information for the hosts connected to the CHA port selected in step 1 once again. Related topics Refreshing all hosts connected to a CHA port on page 5-21 Switching paths offline on page 8-18 Viewing paths Global Link Manager lets you display at one time all paths set between hosts and storage systems, without having to log in to each host on which multipath management software is installed. You can effectively manage the paths for multiple hosts from a single console, and reference paths from that console from various viewpoints (such as grouping information in units of hosts, HBA ports, storage systems, or CHA ports). The following figure shows an example of path management: Getting started 2-17

50 To view path information: Figure 2-3 Path management example 1. Hierarchically group hosts as required. Management of hosts becomes easier when host groups are created to facilitate specific tasks and purposes. The hosts managed by each user can be grouped and the host groups can be hierarchically organized. 2. View path information. Paths can be displayed as a list of paths for all the hosts or summarized into their path statuses. Paths can be displayed in specific units so that the appropriate paths can be placed offline and online as a group when an error occurs or for hardware maintenance. Related topics Managing Host Groups Managing Paths Setting paths according to I/O distribution This section explains the procedure to control path bandwidth and the loadbalancing function to distribute the workload on paths Getting started

51 Managing I/O bottlenecks and path bandwidth Path bandwidth is controlled by setting up an available path by first making it redundant, switching the path to online or offline, and then increasing or reducing the path bandwidth. The following figure shows an example of controlling the path bandwidth by switching the offline path (path pool) to online: Figure 2-4 Example of controlling path bandwidth To explain how to determine whether bottlenecks exist during system operations, and how to locate them, this subsection introduces an example using Tuning Manager. Tuning Manager provides resource performance and capacity data so that the user can optimize use of various resources. You can use Tuning Manager to locate problems as well as prevent problems by executing the forecast function.see the Hitachi Command Suite Tuning Manager Software Server Administration Guide and Hitachi Command Suite Tuning Manager Software User Guide. To control I/O bottlenecks: 1. Use Tuning Manager to check the performance and capacity information, such as for hosts, file systems, and storage system LUs. 2. On the basis of the performance and capacity information for the connected storage system and hosts, set up the paths while considering the pools so that the bandwidth can be adjusted. To use Global Link Manager to manage paths, first use the host's multipath management software to set LUs and their paths as Getting started 2-19

52 management targets. see the multipath management software documentation. To reflect the information specified in the multipath management software onto the Global Link Manager GUI, refresh the host information. 3. Identify bottlenecks during system operations by using Tuning Manager to: Check information, such as the number of I/O operations at each storage system port, and the transmission rate for read and write operations. Find the location where the workload has increased, such as on paths and CHAs. 4. Adjust the workload by switching the path status. To distribute the workloads of paths and eliminate bottlenecks, place paths online or offline as required. Use the Global Link Manager graphical-user interface (GUI) to summarize the paths into an appropriately sorted list, such as in units of CHA ports or storage systems, then switch any desired path statuses. To check the effect of switching the path status, use Tuning Manager to view applicable information, such as the number of I/O operations and the transmission rate. Related topics Refreshing host information on page 5-15 Viewing a list of paths on page 8-7 Switching path status on page 8-15 Distributing I/O across multiple paths on page 2-20 Distributing I/O across multiple paths You can use the load-balancing function of multipath management software to automatically distribute the workload and use paths efficiently. Load balancing prevents performance degradation of the entire system, caused by the excessive concentration of the workload on a single path. The following figure shows an overview of the load-balancing function: 2-20 Getting started

53 Figure 2-5 Overview of the load-balancing function For information about load-balancing requirements and processing methods, see the multipath management software documentation. When you use HDLM and Global Link Manager together, you can configure path load balancing at the LU level of the storage subsystem, as well as at the host level. For details about how to configure load balancing at the host level in the Global Link Manager GUI, see Configuring the HDLM operating environment for a host on page To configure load balancing at the LU level, see the section describing LU-level load balancing in Multipath LU configuration on page Related topics Configuring the HDLM operating environment for a host on page 5-28 Multipath LU configuration on page 5-21 Managing I/O bottlenecks and path bandwidth on page 2-19 Responding to path errors This section explains the procedure to address path errors and the function to address the errors automatically. Identifying and correcting path errors If an error occurs on a path managed by Global Link Manager, error information detected by the multipath management software on each host is Getting started 2-21

54 reported in the form of alerts. Global Link Manager can identify the host where the error occurred without having to check each host because Global Link Manager collectively manages error information for multiple hosts. To identify and correct path errors: 1. In the Dashboard menu of the Global Link Manager GUI, be sure that the number of alerts displayed under HGLM has been updated. You can also check for path errors by using an icon displayed for each host, host group, or storage system. 2. Check the list of alerts for the reported error information to identify the host or path where the error occurred. 3. Acquire the most recent host information. To view the most recent status of hosts and paths, refresh the host information. 4. Check the path where the error occurred and determine the cause. Determine the cause of the error by displaying the path errors in the list of paths, viewing the number of I/O counts and I/O errors, and checking the action to take for the error. If intermittent error monitoring is enabled, a path that is believed to have caused an intermittent error is indicated by a blinking path icon in the list of paths. 5. Handle the error. Use a tool such as an operating system or hardware management tool to locate the error and take appropriate action. For information about hardware maintenance, contact your hardware distributor or maintenance company if there is a maintenance contract. To handle the error, place the paths offline as required. For example, if the cause of the error is a faulty HBA, place all paths to that HBA offline so the HBA can be replaced. After the error is corrected, place online all of the paths that were placed offline. If error recovery requires replacement of a hardware component, reconfigure the multipath management software operating environment after the replacement.see the multipath management software documentation. 6. Refresh the information for the host for which the error was handled to make sure that the path has recovered from the error and is operating normally. Related topics Overview on page 9-2 Refreshing host information on page 5-15 Viewing a list of paths on page 8-7 Switching path status on page 8-15 Path failover on page 2-23 Path failback on page 2-23 Path health check on page Getting started

55 Path failover The automatic multipath management software failover function blocks the path where an error has occurred and switches to a normal path, thus enabling data I/O operations to continue. If the multipath management software detects a Critical or Error path error, a failover will be performed. The following figure shows an overview of the automatic failover function: Path failback Figure 2-6 Overview of the automatic failover function For information about the requirements for the failover function and target path priorities, see the multipath management software documentation. Related topics Identifying and correcting path errors on page 2-21 Path failback on page 2-23 Path health check on page 2-24 When the multipath management software automatic failback function is enabled and the recovery of a path for which a failover was performed due to an error is detected, the path is automatically returned to an online state. If the automatic failback function is not enabled, the path must be manually returned to online. The following figure shows an overview of the automatic failback function: Getting started 2-23

56 Figure 2-7 Overview of the automatic failback function For information about the requirements for the automatic failback function and target path priorities, see the multipath management software documentation. Related topics Path health check Configuring the HDLM operating environment for a host on page 5-28 Identifying and correcting path errors on page 2-21 Path failover on page 2-23 Path health check on page 2-24 The HDLM path health checking function, or the DMP (Windows) dynamic recovery function is used to check path status at fixed intervals for error detection purposes, automatically blocking a path where an error is detected. Normally, an error cannot be detected unless an I/O is issued, because the path status is checked when the I/O is issued. However, when the path health checking function is enabled, the path that are online are checked at fixed intervals regardless of whether I/Os are issued. The following figure shows an overview of the path health check function: 2-24 Getting started

57 Figure 2-8 Overview of the path health check function For information about the requirements for the path health checking function, see the multipath management software documentation. Related topics Configuring the HDLM operating environment for a host on page 5-28 Identifying and correcting path errors on page 2-21 Path failover on page 2-23 Path failback on page 2-23 Getting started 2-25

58 2-26 Getting started

59 3 Managing users and permissions This chapter describes the functions for managing users and explains how to use these functions. Overview Viewing a list of users Viewing individual user information Viewing a summary of user permissions Viewing a list of user permissions Adding users Editing user profiles Deleting users Changing user passwords Changing user permissions Locking user accounts Unlocking user accounts Changing the method for user authentication Managing users and permissions 3-1

60 Overview To run Global Link Manager, you first register the Global Link Manager users, and then you define the permissions that limit the range of operations each user is permitted to perform. You can also reinforce the system security by temporarily locking user accounts. A user whose account has been locked can no longer log in. Users are managed by a user who has the Admin (user management) permission. When Hitachi Command Suite products other than Global Link Manager are being used, users common to all Hitachi Command Suite products can be specified. If you want to integrate user account authentication with other application programs, you can link to an external authentication server (the LDAP directory server, RADIUS server, or Kerberos server for user authentication). Two different types of users operate Global Link Manager, as indicated in the following table: Table 3-1 User management types Management type User management Global Link Manager management User who manages all users common to all Hitachi Command Suite products. This type of user can specify settings for user IDs, permissions, and other information for Hitachi Command Suite product users. User who manages Global Link Manager resources and information that belongs to those resources, such as paths. The following table lists the user permissions associated with the user types. All users can manage their user profiles and Global Link Manager licenses regardless of their permissions. Table 3-2 User permissions Management type Permissions User management Admin Allows a user to log in to all Hitachi Command Suite products and to set up the users common to all Hitachi Command Suite products. Global Link Manager management Admin Modify View Allows a user to access all Global Link Manager resources and execute all tasks other than those for user management. Allows a user to manage resources and paths and outputs that information to CSV files within a resource set by a user who has Admin (Global Link Manager management) permission. Allows a user to view resources and paths within a resource set by a user who has Admin (Global Link Manager management) permission. 3-2 Managing users and permissions

61 Initially, a built-in account that can manage all users and products is prepared. The user ID for the built-in account is System. This user ID (and permissions) cannot be deleted or changed. By default, a user with Admin (user management) permission (other than the built-in account with the user ID System) cannot perform any Global Link Manager operations other than those for user management. Only the built-in account user System can perform such operations. To use Global Link Manager, the user must specify the desired Global Link Manager management permission. Explorer menu items for managing users The following table lists the Explorer menu items used for managing users, and which permissions are required for operating these items. Table 3-3 Explorer menu items for managing users Explorer menu Permissions Submenu Command Admin (for user management) Admin, Modify, View (for Global Link Manager management) Administration Users and Permissions Yes No Functions for managing users The following table lists the functions for managing users, and which permissions are required for operating these functions. Table 3-4 List of functions for managing users Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Viewing a list of users Yes No Viewing individual user information Yes No Viewing a summary of user permissions Yes No Viewing a list of user permissions Yes No Adding a user Yes No Editing a user Yes No Deleting a user Yes No Managing users and permissions 3-3

62 Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Changing user passwords Yes No Changing user permissions Yes No Locking user accounts Yes No Unlocking user accounts Yes No Changing the method for user authentication Yes No Related topics Viewing a list of users on page 3-4 Viewing individual user information on page 3-5 Viewing a summary of user permissions on page 3-5 Viewing a list of user permissions on page 3-6 Adding users on page 3-6 Editing user profiles on page 3-7 Deleting users on page 3-7 Changing user passwords on page 3-9 Changing user permissions on page 3-9 Locking user accounts on page 3-10 Unlocking user accounts on page 3-11 Changing the method for user authentication on page 3-11 Viewing a list of users You can view a list of user information for all Hitachi Command Suite products that have been installed. The list displays user information such as user IDs. To view a list of users: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree and choose Users. The Users subwindow appears with a list of users and corresponding information. Related topics Viewing individual user information on page Managing users and permissions

63 Viewing a summary of user permissions on page 3-5 Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Viewing individual user information You can view the following information for each user: User profile (information such as the user ID and full name) The Permissions list set for each Hitachi Command Suite product To view user information: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Users, and choose the desired user ID. The user-id subwindow appears with user information. Related topics Viewing a list of users on page 3-4 Viewing a summary of user permissions on page 3-5 Users and Permissions subwindow on page A-177 user-id subwindow on page A-180 Viewing a summary of user permissions You can view summary information about all installed Hitachi Command Suite products, such as the number of products registered and the number of users. To view a summary of information about user permissions: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree and choose Permissions. The Permissions subwindow appears with a summary of permission information. Related topics Viewing a list of users on page 3-4 Viewing individual user information on page 3-5 Users and Permissions subwindow on page A-177 Permissions subwindow on page A-184 Managing users and permissions 3-5

64 Viewing a list of user permissions You can view a list of users and their permissions, for each user who manages users and for each Hitachi Command Suite product that has been installed. The list displays permissions information for each user. To view permission information: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Permissions, and then choose User Management or a desired product name. The User Management subwindow or the application-name subwindow appears. Each subwindow displays the member users of the product and their permission information. Related topics Viewing a list of users on page 3-4 Viewing individual user information on page 3-5 Users and Permissions subwindow on page A-177 application-name subwindow on page A-185 Adding users The following procedure describes how to add users common to all Hitachi Command Suite products. To allow an existing Hitachi Command Suite product user to also use Global Link Manager, specify the Global Link Manager management permissions for the user. The initial password required for user registration is set by a user who has the Admin (user management) permission. After logging in by using that initial password, the registered user can change the password. If the exauth.properties file of a management server has been edited to link to an external authentication server, additional users will be authenticated by using the external authentication server by default. For details on the exauth.properties file, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To add a user: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree and choose Users. The Users subwindow appears. 3. Click the Add User button. The Add User dialog box appears. 3-6 Managing users and permissions

65 4. Register the user information to be added. Check the Users subwindow to make sure that the registered user information is displayed. Related topics Changing user permissions on page 3-9 Editing user profiles on page 3-7 Deleting users on page 3-7 Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Add User dialog box on page A-179 Editing user profiles You can edit user profile information that is shared among all Hitachi Command Suite products, such as a user's full name or address. To edit a user: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Users, and choose the desired user ID. The user-id subwindow appears. 3. Click the Edit Profile button. The Edit Profile - user-id dialog box appears. 4. Edit the user information and apply the changes. Check the user-id subwindow to make sure that the user information has been updated. The changes might not immediately appear in the list of users in the Users subwindow. If you do not see the changes, click the Refresh Tree button to update the displayed information. Related topics Adding users on page 3-6 Deleting users on page 3-7 Users and Permissions subwindow on page A-177 user-id subwindow on page A-180 Edit Profile - user-id dialog box (editing a user profile) on page A-182 Deleting users You can delete the users common to all Hitachi Command Suite products. You can delete the single user who is currently displayed or, from a list, you can select and delete multiple users at the same time. Managing users and permissions 3-7

66 Related topics Adding users on page 3-6 Editing user profiles on page 3-7 Deleting individual users To delete an individual user: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Users, and choose the desired user ID. The user-id subwindow appears. 3. Click the Delete User button. The Remove User - user-id dialog box appears. 4. Check the information of the user to be deleted, and then perform the deletion. 5. Check the Users subwindow to make sure that the user information has been deleted. Related topics Users and Permissions subwindow on page A-177 user-id subwindow on page A-180 Users subwindow on page A-178 Deleting multiple users To delete multiple users at one time: 1. In the Explorer menu click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree and choose Users. The Users subwindow appears. 3. From the list of users, select the check boxes of the users to be deleted, and then click the Delete Users button. The Remove Users dialog box appears. 4. Check the users to be deleted, and then perform the deletion. 5. Check the Users subwindow to make sure the users have been deleted. Related topics Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Remove Users dialog box on page A Managing users and permissions

67 Changing user passwords A user with the Admin (user management) permission can change the passwords of registered users (except for users who are externally authenticated). You cannot change the passwords of users for whom external authentication is enabled because an external authentication server manages such passwords. You must observe the password conditions, such as the number of characters and the combination of characters that can be specified, which are set in Security under Administration in the Explorer menu. If you changed the password of a logged-in user, the user can continue to perform operations until logout, but will be unable to start Tuning Manager from the Dashboard menu. When the Global Link Manager server is running in a cluster environment, if you change the password for the built-in account (user ID: System), specify the same settings on all nodes that make up the cluster. If Hitachi Command Suite products and Storage Navigator Modular 2 are installed on the same computer, Common Component centrally manages the user accounts for both. Therefore, if you change the password for a user ID in one of a Hitachi Command Suite product or Storage Navigator Modular 2, the password for the other is also changed. To change a password: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Users, and choose the desired user ID. The user-id subwindow appears. 3. Click the Change Password button. The Change Password - user-id dialog box appears. 4. Change the password and apply the change. Related topics Setting Security Changing user permissions on page 3-9 Users and Permissions subwindow on page A-177 user-id subwindow on page A-180 Change Password - user-id dialog box (changing the logged-in user's password) on page A-217 Changing user permissions You can specify permissions for the operation of each Hitachi Command Suite product for each registered user. To enable an existing Hitachi Command Suite product user to also use Global Link Manager, specify the Global Link Managing users and permissions 3-9

68 Manager management permissions for the user. Permissions can also be granted to users who operate Hitachi Command Suite products other than Global Link Manager. To change permissions: 1. In the Explorer menu, click Administration and choose Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, choose Users, and choose a desired user ID. The user-id subwindow appears. 3. Click the Change Permission button. The Change Permission - user-id dialog box appears. 4. Change permissions and apply the change. Related topics Changing user permissions on page 3-9 Users and Permissions subwindow on page A-177 user-id subwindow on page A-180 Change Password - user-id dialog box (changing the logged-in user's password) on page A-217 Locking user accounts You can temporarily suspend a user's capability to log in to Global Link Manager by locking the user's account. You can lock the accounts of users who are currently logged in, but you cannot lock the accounts of users who can execute the lock operation or the users of the built-in account (user ID: System). When the account of a user who is currently logged in is locked, that user will encounter an error while operating the GUI and will be unable to continue. In addition to manually setting the account lock, you can also set the system to lock a user account automatically after a specified number of unsuccessful consecutive attempts to log in from that account. To lock user accounts: 1. In the Explorer menu, choose Administration and Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, and choose Users. The Users subwindow appears. 3. From the list of users, select the check boxes of the users to be locked, and then click the Lock Users button. The Lock Users dialog box appears. 4. Check the users to be locked, and then execute locking Managing users and permissions

69 Use the Users subwindow to check that the user accounts have been locked. Related topics Changing settings for automatic account lock on page 11-5 Unlocking user accounts on page 3-11 Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Account Lock dialog box on page A-195 Unlocking user accounts Users whose accounts have been temporarily locked or locked because of automatic account locking cannot log in to Global Link Manager until a user who has the Admin (user management) permission unlocks their account. This subsection explains how to unlock user accounts. You can determine whether a user's account is locked by checking the Status field in the list of users. To unlock user accounts: 1. In the Explorer menu, choose Administration and Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, and choose Users. The Users subwindow appears. 3. From the list of users, select the check boxes of the users to be unlocked, and then click the Unlock Users button. The Unlock Users dialog box appears. 4. Check the users to be unlocked and then execute unlocking. Use the Users subwindow to check that the user accounts have been unlocked. Related topics Locking user accounts on page 3-10 Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Account Lock dialog box on page A-195 Changing the method for user authentication You can use an external authentication server (the LDAP directory server, RADIUS server, or Kerberos server for user authentication) to authenticate user accounts for Hitachi Command Suite products to centrally manage the accounts with other application programs. To do this, register the accounts Managing users and permissions 3-11

70 that are the same as the user accounts managed by the external authentication server in the Hitachi Command Suite products, and then authenticate the user IDs and passwords on the external authentication server side. For each user, you can specify whether the account is authenticated as an account exclusive to Hitachi Command Suite products or authenticated by using the external authentication server. However, you cannot authenticate the built-in account (user ID: System) by using the external authentication server. To enable external authentication for users, you need to prepare to link to the external authentication server by, for example, setting up the server and registering user accounts. Perform the procedures described in Preparing to link to an external authentication server on page 3-12, and then perform the procedures described in Changing the user authentication method on page If you want to disable external authentication, perform the procedures described in Changing the user authentication method on page 3-13 to change the authentication method to the one used in Hitachi Command Suite products. Preparing to link to an external authentication server To link to an external authentication server: 1. On the Global Link Manager management server, specify settings for linking to an external authentication server. For details about requirements for an external authentication server and how to specify settings for linking to the server, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. 2. Register the user IDs and passwords used by Hitachi Command Suite products in the external authentication server. The user IDs must be character strings that are within the valid range for Global Link Manager GUI. For details about specifiable character strings, click the Help button in the Add User dialog box. For details about this dialog box, see Adding users on page 3-6. For passwords, you do not have to follow the Global Link Manager restrictions. 3. Register Hitachi Command Suite product users by using the user IDs registered in step 2. In Global Link Manager GUI, specify the user IDs that are the same as those of the accounts registered in the external authentication server. If you register the following users, specify a character string that includes a realm. # A user that is authenticated by another RADIUS server connected via a RADIUS server that is specified as the connection destination in the Global Link Manager server properties file. A user that is registered in a Kerberos server and belongs to a realm other than the realm specified as the default in the Global Link Manager server properties file. For passwords, specify any character string within the valid range for Global Link Manager GUI. If external authentication in enabled, you do 3-12 Managing users and permissions

71 not need to match the password to the one registered in the external authentication server because the password registered in the external authentication server is used for authentication. The specified password is only used when external authentication is disabled. For details about how to register users, see Adding users on page 3-6. This step is not necessary if you have already registered users. #: If the user name that is authenticated by a RADIUS server is user1, the realm is example.com, and the separator specify user1@example.com as the user ID. If multiple user IDs have the same user name and different realms, each user ID is authenticated as a separate user ID. 4. Specify permissions for the users registered in step 3. For details about how to specify user permissions, see Changing user permissions on page 3-9. This step is not necessary if you have already specified the user permissions. Related topics Add User dialog box on page A-179 Changing the user authentication method To change the method for user authentication: 1. From the Explorer menu, choose Administration and then Users and Permissions. The Users and Permissions subwindow appears. 2. Expand the object tree, and then select Users. The Users subwindow appears. 3. In the list of users, select the check boxes of the users for whom you want to enable or disable linkage to the external authentication server, and then click the Change Auth button. The Change Authentication Method dialog box appears. 4. Specify the authentication method, and then update the information. The Authentication column for each user displayed in the Users subwindow is refreshed. Related topics Users and Permissions subwindow on page A-177 Users subwindow on page A-178 Managing users and permissions 3-13

72 3-14 Managing users and permissions

73 4 Managing user profiles This chapter describes the functions for managing user profiles and explains how to use these functions. Overview Viewing user profiles Editing user profiles Changing login passwords Managing user profiles 4-1

74 Overview Logged-in users can manage their own information. Each user uses the user-profile management functions to change passwords and user information (such as full names and addresses, but not user IDs). Explorer menu items for managing user profiles The following table lists the Explorer menu items used for managing user profiles, and which permissions are required for operating these items. Table 4-1 Explorer menu items for managing user profiles Explorer menu Permissions Submenu Command Admin (for user management) Admin, Modify, View (for Global Link Manager management) Settings User Profile Yes Yes Functions for managing user profiles The following table lists the functions for managing user profiles, and which permissions are required for operating these functions. Table 4-2 List of functions for managing user profiles Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Viewing a user profile Yes Yes Editing a user profile Yes Yes Changing a user's password Yes Yes Related topics Viewing user profiles on page 4-3 Editing user profiles on page 4-3 Changing login passwords on page Managing user profiles

75 Viewing user profiles You can view information about logged-in users. This information includes: User information, such as their user ID and full name Information about permissions set for a user for each product To view a user profile: 1. In the Explorer menu, choose Settings and User Profile. The User Profile subwindow appears with information about the logged-in user. Related topics Editing user profiles on page 4-3 Changing login passwords on page 4-4 User Profile subwindow on page A-215 Editing user profiles You can edit a user profile, such as the full name and address. Only the logged-in user's information can be changed. Adding and deleting user IDs, and changing the permissions can be performed from the Administration menu by users who have the Admin (user management) permission. To edit a user profile: 1. In the Explorer menu, choose Settings and User Profile. The User Profile subwindow appears. 2. Click the Edit Profile button. The Edit Profile - user-id dialog box appears. 3. Edit the user information and apply the changes. 4. Check the User Profile subwindow to make sure that the user information has been updated. The changes might not immediately appear in the list of users in the Users subwindow. If you do not see the changes, click the Refresh Tree button to update the displayed information. Related topics Viewing user profiles on page 4-3 Changing login passwords on page 4-4 User Profile subwindow on page A-215 Edit Profile - user-id dialog box (editing a user profile) on page A-182 Managing user profiles 4-3

76 Changing login passwords You can change the login password. The logged-in user can change their initial password, which was specified by a user who had the Admin (user management) permission. However, if passwords are set up to be externally authenticated, users cannot change the passwords by using the Global Link Manager GUI because an external authentication server manages such passwords. To change such passwords, use an external authentication server. Any changes made to a password must conform to the settings set by a user who has the Admin (user management) permission for setting password conditions, such as the minimum length and a required combination of character types. When the Global Link Manager server is running in a cluster environment, if you change the password for the built-in account (user ID: System), specify the same settings on all nodes that make up the cluster. To change the password: 1. In the Explorer menu, choose Settings and User Profile. The User Profile subwindow appears. 2. Click the Change Password button. The Change Password - user-id dialog box appears. 3. Change the password and apply the change. The next time you log in, use the new password. If you are using Tuning Manager and the password is changed, you will not be able to start Tuning Manager from the Dashboard menu. To start Tuning Manager, log out, and then log in by using the new password. Related topics Viewing user profiles on page 4-3 Editing user profiles on page 4-3 User Profile subwindow on page A-215 Change Password - user-id dialog box (changing the logged-in user's password) on page A Managing user profiles

77 5 Managing hosts This chapter describes the functions for managing hosts and describes how to use these functions. Overview Viewing a list of hosts Viewing individual host information Adding hosts Removing hosts Refreshing host information Multipath LU configuration Configuring the HDLM operating environment for a host Configuring alerts for a host Managing hosts 5-1

78 Overview Global Link Manager provides integrated management of hosts to control the paths between multiple hosts and storage systems. In Global Link Manager, host management functions are used for the following purposes: Manage information for multiple hosts Determine which hosts are running an older version of multipath management software to upgrade the version of the multipath management software installed on the hosts Configure the host execution environment (multipath LU configuration, HDLM environment configuration, alert configuration) You can configure the multipath LU configuration and HDLM environment configuration in Global Link Manager only if you are using HDLM for the hosts. The following figure uses an example to show an overview of host management: Figure 5-1 Overview of host management Explorer menu items for managing hosts The following table lists the Explorer menu items used for managing hosts, and which Global Link Manager management permissions are required for operating these items. 5-2 Managing hosts

79 Table 5-1 Explorer menu items for managing hosts Explorer menu Permissions Submenu Command Admin Modify View Resources Hosts Yes Yes Yes My Groups Host Groups Yes Yes Yes Functions for managing hosts The following table lists the functions for managing hosts, and which Global Link Manager management permissions are required for operating these functions. Table 5-2 List of functions for managing hosts Functions Permissions Admin Modify # View # Viewing a list of hosts Yes Yes Yes Viewing individual host information Yes Yes Yes Adding a host Yes No No Removing a host Yes No No Refreshing host information Yes Yes No Multipath LU configuration Yes Yes No Configuring the HDLM operating environment for a host Yes Yes No Configuring alerts for a host Yes Yes No # A user with Modify or View permission can use these functions only for hosts in resource groups associated with that user. When the host OS is VMware, the HDLM version of the host is displayed, not that of the remote management client. Related topics Viewing a list of hosts on page 5-4 Viewing individual host information on page 5-4 Adding hosts on page 5-5 Removing hosts on page 5-15 Refreshing host information on page 5-15 Multipath LU configuration on page 5-21 Configuring the HDLM operating environment for a host on page 5-28 Configuring alerts for a host on page 5-32 Managing hosts 5-3

80 Viewing a list of hosts You can view a list of information for all hosts for which you have access permissions. You can also use the host icons to check path errors and the update status of host information. Summarized information for all hosts (the number of hosts, the number of hosts for which the information failed to be refreshed, and the number of paths in each path status) A list of hosts A summary of multipath management software versions # (the number of hosts for each operating system or kernel version) # If the HDLM version of a host is earlier than 5.6, only the version and revision numbers are displayed, and the service pack version and corrected version information are not displayed. Viewing the information for multiple hosts enables understanding of the status of all managed hosts. It also lets you identify all hosts for which a version upgrade of multipath management software is to be performed. The following versions should be checked from the table in order to determine which hosts need to be upgraded: The versions of the multipath management software installed on all of the managed hosts The OS or kernel versions To view a list of hosts: 1. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears with a list of hosts and corresponding information. If a host for which information failed to be refreshed exists, the Number of Refresh Failed Hosts link is displayed. Clicking this link (the number of hosts) displays the Show Refresh Failed Hosts dialog box. Related topics Viewing individual host information on page 5-4 Hosts subwindow on page A-4 Viewing individual host information You can view information for each host. This information includes: Summarized information for the host (including such information as the host name, operating system, multipath management software version #, IP address, and the number of paths in each of the path statuses) A list of paths A list of Multipath LUs 5-4 Managing hosts

81 A list of HBA ports HDLM environment configuration information Alert configuration information # If the HDLM version of a host is earlier than 5.6, only the version and revision numbers are displayed, and the service pack version and corrected version information are not displayed. You can view host information from the Resources submenu or My Groups submenu. In cases such as when many hosts are to be managed, create host groups and allocate the hosts into appropriate groups. The My Groups submenu can then be used to easily find desired hosts. To view host information: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click Resources and choose Storage systems. Click My Groups and choose Host Groups. The Hosts subwindow, Storage systems subwindow, or Host Groups subwindow appears. 2. If the Storage systems subwindow appears, expand the object tree and select the target storage system. The Storage-system-Name subwindow appears. If necessary, select the tab for the target multipath management software. 3. Select the target host. If the Hosts subwindow or Host Groups subwindow appears, expand the object tree and select the target host. The host-name subwindow appears with the host information. Related topics Viewing a list of hosts on page 5-4 Hosts subwindow on page A-4 Storage systems subwindow on page A-105 Host Groups subwindow on page A-147 storage-system-name subwindow on page A-107 host-name subwindow on page A-52 Adding hosts To place hosts under Global Link Manager management, you need to register each host as a Global Link Manager resource. When a host is added, information for the paths that belong to the host and the connected storage systems can also be browsed from Global Link Managing hosts 5-5

82 Manager. The following figure shows an example of host management before and after adding a host: Figure 5-2 Example of managing hosts before and after adding a host The following steps summarize the procedures for adding hosts: 1. Before adding hosts, collect information about the hosts to be added, and configure the Device Manager agent, the hosts file, and other settings on each host. 2. Either enter the host information or add hosts automatically based on a network scan. To add hosts by entering host information, either manually enter the necessary information for one host at a time, or import information for all hosts at the same time from a CSV file. If you add hosts automatically by scanning for hosts on a network in a specified IP address range, you can perform a Scan Now or Scheduled Scan network scan. With a Scheduled Scan network scan, you can specify the time and fixed interval (daily, weekly, or monthly) at which to periodically perform the scan. Tip: When multipath management software will be used in a cluster configuration, you need to individually add all of the hosts in the cluster. Related topics Removing hosts on page Managing hosts

83 Preparing to add hosts This section describes the information that needs to be collected and the settings that need to be configured on each host, before adding hosts to Global Link Manager resources. Required settings on a host: Before you add a host, if necessary, observe the following guidelines: If you will be using Device Manger agent on the host to be added If you will not be using Device Manager agent or if you have already configured the Device Manager server information by using the hdvmagt_account command # of the Device Manager agent to manage the host by Device Manager, this configuration is unnecessary. If you will be using Device Manager agent and you have not already configured the Device Manager server information by using the hdvmagt_account command #, execute the hdvmagt_account command # of the Device Manager agent on each host, using the following IP address, port number, user ID, and password: IP address: The IP address of the local host (that is to be added) Port number: 2001 (if this number is used, specify any number) User ID: HaUser Password: haset #: If you will be using Device Manager to manage hosts and you have not configured the Device Manager server information, execute the hdvmagt_account command to configure the information. The hdvmagt_account command is a command of the Device Manager agent whose version is earlier than 7.0. If you are using version 7.0 or later of the Device Manager agent, execute the hdvmagt_setting command to configure the information. For information about the hdvmagt_account command and the notes on executing a command, see the Hitachi Device Manager Agent Installation Guide. For information about the hdvmagt_setting command and the notes on executing a command, see the Hitachi Command Suite Administrator Guide. Tip: If the service of Device Manager agent is not running on the host after you execute the command, start the service. For information about starting the service, see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide If the host operating system is Solaris, AIX, HP-UX, or Linux Edit the hosts file of each host to be added. Managing hosts 5-7

84 Write localhost and your host (host name) into the /etc/hosts file of each host to be added. If the host operating system is Linux, write your host on the line above the localhost line. If the host operating system is Windows, this configuration is unnecessary. If adding a host where multiple network-interface cards (NICs) are installed Specify the IP address used to communicate with Global Link Manager. If only one network-interface card is installed on the host, or if the host OS is HDLM VMware, this configuration is unnecessary. If multiple NICs are installed, you must specify the IP address of one of them for the server.http.socket.agentaddress and server.http.socket.bindaddress properties # in the Device Manager agent or Hitachi Command Suite Common Agent Component server.properties file on each host. If these settings are not performed, it might not be possible to add a host. To add a host by specifying a host name, you must have configured the network in such a way that the host name can be resolved from the IP address specified in the server.http.socket.agentaddress property and server.http.socket.bindaddress property. #: For information about the server.http.socket.agentaddress property and server.http.socket.bindaddress property in the server.properties file, when the HDLM version of the host is earlier than 5.8, see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide. If the HDLM version of the host is 5.8 or later, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Collecting host information: Prepare the following information for each host to be added because the information will be required when adding hosts. When the HDLM version of a host is earlier than 5.8: IP address or host name Agent service port: A port number # used by the service (or daemon process) of the Device Manager agent Remote port: A port number # used in the Web server functionality of the Device Manager agent #: For information about how to check the set values for the following properties in the server.properties file, see the Hitachi Device Manager Agent Installation Guide or Hitachi Command Suite Administrator Guide: - Agent service port: server.agent.port property 5-8 Managing hosts

85 - Remote port: server.http.port property When the HDLM version of a host is 5.8 or later, or when you are using DMP or HP-UX multipath: IP address or host name Agent service port: When the host OS is not HDLM VMware, a port number # used by the service (or daemon process) of Hitachi Command Suite Common Agent Component When the host OS is HDLM VMware, a port that connects to the Hitachi Command Suite Common Agent Component on the remote management client #: For information about how to check the set values for the server.agent.port property in the server.properties file, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Notes on the ESXi host: When managing an ESXi host When managing an ESXi host, a message is displayed in the following situations: When the alert notification function is enabled, the ESXi host is accessed every five minutes to collect alert information, so login and logout messages are output on the ESXi host. When the automatic update function of the host is enabled, the ESXi host is accessed and information is collected for every value specified in server.auto_refresh.interval in the server.properties, so login and logout messages are output on the ESXi host. When using Lockdown Mode on an ESXi host If Lockdown Mode is enabled, you cannot perform operations from a remote management client. For this reason, disable Lockdown Mode before you perform an operation from Global Link Manager. Furthermore, because Global Link Manager functions cannot collect information while Lockdown Mode is enabled, disable the following Global Link Manager functions before you perform an operation using Lockdown Mode. Function for receiving SNMP traps Output of reports on path availability information Related topics Adding hosts on page 5-5 Adding hosts manually on page 5-10 Adding hosts by importing a CSV file on page 5-11 Adding hosts using a "Scan Now" network scan on page 5-12 Managing hosts 5-9

86 Adding hosts using a "Scheduled Scan" network scan on page 5-13 Adding hosts manually To add a host manually: 1. Review the guidelines described in Preparing to add hosts on page 5-7 before adding hosts. 2. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 3. In the Hosts tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 4. In the Manual Entry tabbed-page, register the information about the hosts to be added. 5. Check the Hosts subwindow to make sure that the information about the registered hosts is displayed. Tip: When registering a host, specify the IP address or host name using a real address or real host name. 6. If alerts are configured to be automatically reported from hosts #, confirm that the alerts are being reported normally. An alert (message ID: KAPL04042-I) that indicates changing the alert setup has finished is reported from registered hosts. In the Explorer menu, click the Alerts submenu and check the alert list to confirm that the alert has been reported. # By default, hosts are automatically configured so that alerts are reported from each host. You can change this setting by specifying the server.snmp.auto_set property in the server.properties file of the Global Link Manager server. For information about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Related topics Adding hosts on page 5-5 Preparing to add hosts on page 5-7 Adding hosts manually on page 5-10 Adding hosts using a "Scan Now" network scan on page 5-12 Adding hosts using a "Scheduled Scan" network scan on page 5-13 Hosts subwindow on page A-4 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A Managing hosts

87 Adding hosts by importing a CSV file To add hosts by importing a comma-separated value (CSV) file: 1. Review the guidelines described in Preparing to add hosts on page 5-7 before adding hosts. 2. Prepare the import file by using the following format. The number of hosts that can be loaded from the import file at one time depends on the Global Link Manager server environment settings #1. Format for the import file IP-address or host-name-1,agent-service-port-1,remote-port-1 IP-address or host-name-2,agent-service-port-2,remote-port-2 : IP-address or host-name-n,agent-service-port-n,remote-port-n To add a comment line, begin the line with a hash mark (#). If the HDLM version of a host is 5.8 or later, you do not need to specify the remote port and it does not matter whether you add a comma (,) to the right of the specified value for the agent service port. Example: # A job host ,24041 hostnamexx,24041 # B job host ,23013,23011 : ,24041 Tip: When registering a host, specify the IP address or host name using a real address or real host name. 3. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 4. In the Hosts tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 5. Register the information about the hosts you plan to add by specifying the import file in the Import tabbed-page. 6. Check the Hosts subwindow to make sure that the information about the registered hosts is displayed. 7. If alerts are configured to be automatically reported from hosts #2, confirm that the alerts are being reported normally. An alert (message ID: KAPL04042-I) that indicates changing the alert setup has finished is reported from registered hosts. In the Explorer menu, click the Alerts submenu, and then check the alert list to confirm that the alert has been reported. #1 Managing hosts 5-11

88 #2 The maximum number of hosts that can be loaded from the import file is equal to the maximum number of task queues specified in the server.task.max_queue_size property in the server.properties file of the Global Link Manager server. For information about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. By default, hosts are automatically configured so that alerts are reported from each host. You can change this setting by specifying the server.snmp.auto_set property in the server.properties file of the Global Link Manager server. For information about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Related topics Adding hosts on page 5-5 Preparing to add hosts on page 5-7 Adding hosts manually on page 5-10 Adding hosts using a "Scan Now" network scan on page 5-12 Adding hosts using a "Scheduled Scan" network scan on page 5-13 Hosts subwindow on page A-4 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A-190 Adding hosts using a "Scan Now" network scan To add hosts using a Scan Now network scan: 1. Review the guidelines described in Preparing to add hosts on page 5-7 before adding hosts. 2. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 3. In the Hosts tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 4. In the Scan Now tabbed-page under the Network Scan tab, enter the IP address range (maximum number: 256) and the port numbers you want to scan, and then initiate the scan. Check the results of the scan in the Scan Results dialog box. You can also check the scan results by clicking the View Scan Results button to view a historical record of scan results. Tip: 5-12 Managing hosts

89 Depending on the operating status of the Global Link Manager server and the number of hosts registered, scanning might take several tens of minutes. If a Scan Now scan begins just before a scan is scheduled to be executed, the scheduled scan will begin sometime after its scheduled time, because a Scan Now scan takes precedence. 5. If alerts are configured to be automatically reported from hosts #, confirm that the alerts are being reported normally. An alert (message ID: KAPL04042-I) that indicates changing the alert setup has finished is reported from registered hosts. In the Explorer menu, click the Alerts submenu and check the alert list to confirm that the alert has been reported. # By default, hosts are automatically configured so that alerts are reported from each host. You can change this setting by specifying the server.snmp.auto_set property in the server.properties file of the Global Link Manager server. For information about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Related topics Adding hosts on page 5-5 Preparing to add hosts on page 5-7 Adding hosts manually on page 5-10 Adding hosts by importing a CSV file on page 5-11 Adding hosts using a "Scheduled Scan" network scan on page 5-13 Hosts subwindow on page A-4 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A-190 Adding hosts using a "Scheduled Scan" network scan To add hosts using a Scheduled Scan network scan: 1. Review the guidelines described in Preparing to add hosts on page 5-7 before adding hosts. 2. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 3. In the Hosts tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 4. In the Scheduled Scan tabbed-page under the Network Scan tab, click the Add Schedule button. The Add Network Scan Schedule dialog box appears. Managing hosts 5-13

90 5. Register the IP address range (maximum number: 256) and the port numbers you want to scan, as well as the execution schedule. You can register a maximum of 100 schedules. To edit or delete a registered schedule, in the Scheduled Scan tabbed-page under the Network Scan tab, select the check box corresponding to the schedule you want to edit or delete, and then click the Edit Schedule button or the Delete Schedule button. Tip: If a schedule is edited or deleted while scanning is being performed, the ongoing scan is updated or deleted after it has finished executing, without being interrupted. If a Scan Now scan begins just before a scan is scheduled to be executed, the scheduled scan will begin sometime after its scheduled time, because a Scan Now scan takes precedence. You cannot specify information about the connection target for a remote management client. 6. Check the scan results after the scheduled time has passed. To do so, in the Scheduled Scan tabbed-page under the Network Scan tab, click the View Scan Results button. This action displays the Network Scan Results (Scheduled Scan) dialog box. Here you can check the processing status and scan results of scheduled network scans. 7. If alerts are configured to be automatically reported from hosts #, confirm that the alerts are being reported normally. An alert (message ID: KAPL04042-I) that indicates changing the alert setup has finished is reported from registered hosts. In the Explorer menu, click the Alerts submenu and check the alert list to confirm that the alert has been reported. # By default, hosts are automatically configured so that alerts are reported from each host. You can change this setting by specifying the server.snmp.auto_set property in the server.properties file of the Global Link Manager server. For information about this property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Related topics Adding hosts on page 5-5 Preparing to add hosts on page 5-7 Adding hosts manually on page 5-10 Adding hosts by importing a CSV file on page 5-11 Adding hosts using a "Scan Now" network scan on page 5-12 Hosts subwindow on page A-4 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A Managing hosts

91 Add Hosts dialog box (adding to a resource group) on page A-190 Add Network Scan Schedule dialog box on page A-33 Network Scan Results (scan-type) dialog box on page A-31 Network Scan Results Detail (scan-type) dialog box on page A-31 Removing hosts To change the Global Link Manager-management host to non-global Link Manager-management host, remove the host from Global Link Manager resources. When a host is removed, the information that belongs to the host will no longer be managed by Global Link Manager, and the alert information and path availability information (path status log) that are acquired from the host will also be removed. Make sure that you have checked all alerts before removing a host. To remove a host: 1. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 2. In the Hosts tabbed-page, select the check boxes of the hosts to be removed, and then click the Remove Hosts button. The Remove Hosts dialog box appears. 3. Check the hosts to be removed, and then perform the deletion. 4. Check the Hosts subwindow to make sure that the hosts have been removed. Related topics Adding hosts on page 5-5 Hosts subwindow on page A-4 Remove Hosts dialog box (removing from resources) on page A-36 Remove Hosts dialog box (removing from a resource group) on page A-191 Refreshing host information You can refresh to update information about a specified host. The configuration information for each host is collected, and the most recent information is displayed on the Global Link Manager graphical-user interface (GUI). In Global Link Manager, GUI operability can be maintained even in an environment in which many hosts are connected. This is accomplished by maintaining configuration information collected from the hosts in an Global Link Manager server database. This information can be viewed using the Managing hosts 5-15

92 Global Link Manager client and a Web browser. The following figure shows the flow of processing when refreshing the host information: Figure 5-3 Flow of processing when refreshing the host information Change path configuration The path configuration can be changed when the host information is refreshed. The change path configuration functionality is for adding or deleting paths dynamically without affecting the existing paths. This functionality can be executed if the host has HDLM (and the operating system is not VMware). Tip: The path configuration can be changed only if the version of HDLM on the host is version 7.6 or later. If the version of HDLM is 7.6 and if the operating system is Solaris, when paths are added dynamically, the multipath LUs that are disconnected are deleted. If the host operating system is Solaris, the multipath LU name for added paths might not be displayed. In this case, wait a while and then refresh the host information. Procedure for changing the path configuration The procedure for changing the path configuration is given below. Note that paths can be deleted if the HDLM version is 8.0 or later and the host operating system is Solaris (version 10 or later). Also, if the host operating system is Windows, paths cannot be added dynamically. 1. If adding paths dynamically and if the host operating system is Linux, the paths you want to add are required to be recognized by the operating system. See the HDLM manual and make the operating system recognize the paths. 2. If deleting paths dynamically, perform the following for each host's operating system beforehand: 5-16 Managing hosts

93 If the host operating system is AIX, select the path you want to delete and then perform offline settings. If the host operating system is Linux, the paths you want to delete need to be deleted from the operating system. See the HDLM manual, and delete the paths from the operating system. If the host operating system is Solaris (version 10 or later), and if the version of HDLM is 8.0 or later, the paths you want to delete need to be deleted from the operating system. See the HDLM manual, and delete the paths from the operating system. If the host operating system is Windows, select the paths you want to delete that are not connected, and then perform offline settings. 3. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears. 4. In the Hosts tabbed-page, select the check boxes of the hosts for which you want to change path configuration, and then click the Refresh Host button. The Refresh Hosts dialog box appears. 5. In Change Path Configuration:, select the Adds a Path Dynamically or the Deletes a Path Dynamically check box, and then execute the functionality. In Paths, check the information of the added or deleted paths in the Adds a Path Dynamically - host-name dialog box, or in the Deletes a Path Dynamically - host-name dialog box. Procedure to reset processing The procedure to reset processing is described below. 1. In the Explorer menu, click Resources and then choose Hosts. The Hosts subwindow appears. 2. In the Hosts tab, select the check boxes of the hosts for which you want to reset processing, and then click the Refresh Host button. The Refresh Hosts dialog box appears. 3. Under Reset, select the Reset I/O Count check box or the Reset the Lost paths check box, and then execute the function. Procedure for refreshing the GAD non-preferred path option The procedure for refreshing the GAD non-preferred path option is given below. Note that this procedure can be performed when the version of HDLM is or later and when global storage virtualization is being used. 1. In the Explorer menu, click Resources and then choose Hosts. The Hosts subwindow appears. 2. In the Hosts tab, select the check boxes of the hosts for which you want to perform processing to refresh the GAD non-preferred path option, and then click the Refresh Host button. The Refresh Hosts dialog box appears. Managing hosts 5-17

94 3. Select the Refresh the GAD non-preferred path option check box, and then execute. Automatically refreshing host information You can configure the Global Link Manager server environment settings so that host information is refreshed automatically. Automatically refresh at a fixed interval By default, host information is automatically refreshed every 180 minutes. Use the server.auto_refresh.enable property in the Global Link Manager server server.properties file to specify whether to enable or disable automatic refreshing of host information. Automatically refresh upon receiving an alert By default, if an alert (message ID: KAPL08022-E) is received through notification by an SNMP trap issued when a path error occurs, information about the originating host is updated automatically. Use the server.snmp.alert_refresh_enable property in the Global Link Manager server server.properties file to specify whether to enable or disable automatic refreshing of host information. You can configure the SNMP trap alert notification function for hosts running HDLM version 5.8 or later, or when you are using DMP or HP-UX multipath. For details about the server.properties file, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. You can manually refresh host information for one host or host group, for multiple hosts or host groups, or for all hosts connected to a selected CHA port. Related topics Configuring alerts for a host on page 5-32 Hosts subwindow on page A-4 Refresh Hosts dialog box on page A-36 Adds a Path Dynamically - host-name/deletes a Path Dynamically - hostname dialog box on page A-38 Refreshing host information for a single host To refresh host information for a host: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears Managing hosts

95 3. Click the Refresh Host button. The Refresh Host - host-name dialog box appears. 4. Confirm the host to be refreshed and execute the refresh. 5. Check the host-name subwindow to make sure that the host information has been refreshed. Related topics Refreshing host information on page 5-15 Refreshing host information for multiple hosts on page 5-19 Refreshing a single host group on page 5-20 Refreshing multiple host groups on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 host-name dialog box on page A-78 Refreshing host information for multiple hosts To refresh host information for multiple hosts at once: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. If the Host Groups subwindow is displayed, expand the object tree and select the target host group. The host-group-name subwindow appears. 3. In the Hosts tabbed-page, select the check boxes of the hosts to be refreshed, and then click the Refresh Hosts button. The Refresh Hosts dialog box appears. 4. Confirm the hosts to be refreshed and execute the refresh. 5. Check the Hosts subwindow or Host Groups subwindow to make sure that the host information has been refreshed. Related topics Refreshing host information on page 5-15 Refreshing host information for a single host on page 5-18 Refreshing a single host group on page 5-20 Refreshing multiple host groups on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 Managing hosts 5-19

96 host-group-name subwindow on page A-160 Refresh Hosts dialog box on page A-36 Refreshing a single host group To refresh host information for a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. 3. Click the Refresh Group button. The Refresh Host Group - host-group-name dialog box appears. 4. Check the host group to be refreshed, and then perform the refresh. 5. Check the host-group-name subwindow to make sure that the host information has been refreshed. Related topics Refreshing host information on page 5-15 Refreshing host information for a single host on page 5-18 Refreshing host information for multiple hosts on page 5-19 Refreshing multiple host groups on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Refresh Host Groups dialog box on page A-159 Refreshing multiple host groups To refresh host information for multiple host groups at once: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. In the Groups tabbed-page, select the check boxes of the host groups to be refreshed, and then click the Refresh Groups button. The Refresh Host Groups dialog box appears. 3. Check the hosts that belong to the selected host groups, and then perform the refresh. 4. Check the Host Groups subwindow to make sure that the host group information has been refreshed. Related topics Refreshing host information on page 5-15 Refreshing host information for a single host on page 5-18 Refreshing host information for multiple hosts on page Managing hosts

97 Refreshing a single host group on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Host Groups subwindow on page A-147 Refresh Host Groups dialog box on page A-159 Refreshing all hosts connected to a CHA port To refresh host information for all hosts connected to a CHA port: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears. If necessary, select the tab for the target multipath management software. 3. In the CHA Ports tabbed-page, or Targets tabbed-page, select the check boxes of the CHA ports, and then click the Refresh Hosts button. The Refresh Hosts dialog box appears. 4. Confirm the hosts to be refreshed and execute the refresh. 5. Check the Hosts subwindow or host-group-name subwindow to make sure that the host information has been refreshed. Related topics Refreshing host information on page 5-15 Refreshing host information for a single host on page 5-18 Refreshing host information for multiple hosts on page 5-19 Refreshing a single host group on page 5-20 Refreshing multiple host groups on page 5-20 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 Refresh Hosts dialog box on page A-36 Hosts subwindow on page A-4 host-group-name subwindow on page A-160 Multipath LU configuration In Global Link Manager, you can configure the following at the LU level: load balancing, dynamic I/O path control, the number of times the same path can be used, and the number of times the same path can be used for extended load balancing (random I/O). Managing hosts 5-21

98 Setting load balancing at the LU level When the Hitachi Dynamic Link Manager Software (HDLM) version of the host is 5.8 or later, Global Link Manager enables you to set load balancing for individual LUs connected from the host. You can do the following: Change the setting for whether to use the load balancing function for certain LUs. Set separate load-balancing algorithms for certain LUs. For certain LUs, the specified algorithm sets the number of times the same path can be used for I/O. Setting dynamic I/O path control at the LU level When all the following conditions are met, you can enable or disable dynamic I/O path control for individual LUs. The HDLM version is 7.3 or later. The storage systems connected to the host support dynamic I/O path control. Tip: When the host OS is VMware, operations on the host might take several minutes (approximately 3 minutes) per 100 LUs to complete. Setting the number of times the same path can be used at the LU level When the Hitachi Dynamic Link Manager (HDLM) version of the host is or later and the host OS is not VMware, you can set the following for individual LUs: Set the number of times the same path can be used for I/O when applying round robin (rr), least I/Os (lio), or least blocks (lbk) for loadbalancing algorithms. Set the number of times the same path can be used for sequential I/O when applying extended round robin (exrr), extended least I/Os (exlio), or extended least blocks (exlbk) for load-balancing algorithms. Setting the number of times the same path can be used for extended load balancing (random I/O) at the LU level When the Hitachi Dynamic Link Manager (HDLM) version of the host is or later and the host OS is not VMware, you can set the following for individual LUs: Set the number of times the same path can be used for random I/O when applying extended round robin (exrr), extended least I/Os (exlio), or extended least blocks (exlbk) for load-balancing algorithms. If the host OS is VMware, the settings for load balancing, number of times the same path can be used, and dynamic I/O path control on the Configure HDLM page are applied to all multipath LUs. If the host OS is not VMware, 5-22 Managing hosts

99 the settings for dynamic I/O path control are applied to all multipath LUs. This configuration must be performed from the Configure Multipath LUs dialog box. When you add a new host to Global Link Manager resources, the load balancing setting for each host is carried over when load balancing is set for individual LUs. The following figure shows an example of configuring load balancing, the number of times the same path can be used, and dynamic I/O path control for individual LUs: Figure 5-4 Example of configuring load balancing and dynamic I/O path control for individual LUs The load balancing, the number of times the same path can be used, and dynamic I/O path control configuration for individual LUs is applied to the multipath LUs corresponding to the LUs. Regardless of the number of paths, Managing hosts 5-23

100 in a list of Multipath LUs, the list of HDevs (host devices managed by HDLM) sorted by the individual LUs is displayed as Multipath LUs. Therefore, you can select a Multipath LU for each LU to configure load balancing. If the host operating system is Solaris 7, and multiple HDevs correspond to the same LU, only the HDev that has the smallest path ID and has an owner path is displayed. This HDev is displayed as the HDev name with the slice number omitted. The following figure shows an example of Multipath LU configuration for each host operating system: Figure 5-5 Overview of multipath LU configuration (configuration example for each host operating system) 5-24 Managing hosts

101 The Multipath LU configuration can be set up to view a list of Multipath LUs in units of hosts, host groups, or storage systems. Set the same unit as is used for the configuration of the host used by the user application. Tip: Initializing the Multipath LU configuration information: When one of the following conditions is true, the Multipath LU configuration information set by the Global Link Manager GUI is initialized: The HDLM interface (HDLM GUI, HDLM Web GUI, or HDLM command) of the host is used for configuring load balancing: HDLM sets the environment configuration for individual hosts. You cannot set this on an LU basis. Therefore, if the HDLM user interface is used for configuring load balancing, the number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or dynamic I/O path control, the configuration settings apply to individual hosts, and each Multipath LU configuration is initialized. The host operating system is Windows and an LU is dynamically reconfigured (when the function that dynamically removes LUs is used in a Windows version of HDLM): When all paths that are connected to an LU become disconnected, the LU is automatically removed from the HDLM management targets. After this, when the LU is restored, the Multipath LU configuration set for that LU is initialized. Tip: Results for HDLM commands executed during Multipath LU configuration: If an HDLM command is executed with the -sys -sfunc parameter specified for the view operation when you set load balancing or dynamic I/O path control for an individual LU in a manner that differs from the host-level setting, an asterisk (*) is output as the Load Balance or Dynamic I/O Path Control value, as shown in the following example. If the host OS is VMware, an asterisk (*) is not output as the Load Balance value. Example: When the HDLM configuration and multipath LU configuration are as follows: HDLM configuration Load Balancing: Extended Round Robin Dynamic I/O path control: Disabled Multipath LU configuration Load Balancing: Extended Least I/Os or Following setting in the host is specified for individual LUs Dynamic I/O path control: Disabled or Enabled is specified for individual LUs HDLM Version : Service Pack Version : Load Balance : on(exrr)* Support Cluster : Elog Level : 3 Elog File Size(KB) : 9900 Number Of Elog Files : 2 Trace Level : 0 Managing hosts 5-25

102 Trace File Size(KB) : 1000 Number Of Trace Files : 4 Path Health Checking : on(30) Auto Failback : off Intermittent Error Monitor : off Dynamic I/O Path Control : off(10)* Configuring multipath LUs for individual hosts Load balancing can be set for individual LUs only when the HDLM version of the host is 5.8 or later. The number of times the same path can be used, can be set for individual LUs only when the HDLM version of the host is or later. The number of times the same path can be used for extended load balancing (random I/O) can be set for individual LUs only when the HDLM version of the host is or later. Dynamic I/O path control can be set for individual LUs only when the HDLM version of the host is 7.3 or later and the connected storage subsystem is compatible with dynamic I/O path control. If the HDLM version of the host is earlier than 5.8, the Configure Multipath LUs button is not displayed in the host-name subwindow selected in the Global Link Manager graphical-user interface (GUI). To configure Multipath LUs for individual hosts: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears. 3. In the Multipath LUs tabbed-page, select the check boxes of the multipath LUs to be configured with the same load balancing algorithm, the number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or dynamic I/O path control setting, and then click the Configure Multipath LUs button. The Configure Multipath LUs dialog box appears. 4. Set the load balancing algorithm, the number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or dynamic I/O path control for the selected multipath LUs. 5. Check the host-name subwindow to make sure that the Multipath LU information has been refreshed. 6. To configure multiple algorithms, repeat steps 3 and 5. Related topics Multipath LU configuration on page 5-21 Configuring multipath LUs for individual host groups on page 5-27 Configuring multipath LUs for an individual storage system on page 5-28 Hosts subwindow on page A Managing hosts

103 Host Groups subwindow on page A-147 host-name subwindow on page A-52 Configure Multipath LUs dialog box on page A-87 Configuring multipath LUs for individual host groups Load balancing can be set for individual LUs only when the Hitachi Dynamic Link Manager Software (HDLM) version of the host is 5.8 or later. The number of times the same path can be used, can be set for individual LUs only when the HDLM version of the host is or later. The number of times the same path can be used for extended load balancing (random I/O) can be set for individual LUs only when the HDLM version of the host is or later. Dynamic I/O path control can be set for individual LUs only when the HDLM version of the host is 7.3 or later and the connected storage subsystem is compatible with dynamic I/O path control. To configure Multipath LUs for an individual host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. 3. In the Multipath LUs tabbed-page, select the check boxes of the multipath LUs to be configured with the same load balancing algorithm, the same number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or the same dynamic I/O path control setting, and then click the Configure Multipath LUs button. The Configure Multipath LUs dialog box appears. 4. Set the load balancing algorithm, the number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or dynamic I/O path control for the selected multipath LUs. 5. Check the host-group-name subwindow to make sure that the Multipath LU information has been refreshed. 6. To configure multiple algorithms, repeat steps 3 and 5. Related topics Multipath LU configuration on page 5-21 Configuring multipath LUs for individual hosts on page 5-26 Configuring multipath LUs for individual host groups on page 5-27 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Configure Multipath LUs dialog box on page A-87 Managing hosts 5-27

104 Configuring multipath LUs for an individual storage system Load balancing can be set for individual LUs only when the HDLM version of the host is 5.8 or later. The number of times the same path can be used, can be set for individual LUs only when the HDLM version of the host is or later. The number of times the same path can be used for extended load balancing (random I/O) can be set for individual LUs only when the HDLM version of the host is or later. Dynamic I/O path control can be set for individual LUs only when the HDLM version of the host is 7.3 or later and the connected storage subsystem is compatible with dynamic I/O path control. To configure Multipath LUs for an individual storage system: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears. 3. In the Multipath LUs tabbed-page, select the check boxes of the multipath LUs to be configured with the same load balancing algorithm, the same number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or the same dynamic I/O path control setting, and then click the Configure Multipath LUs button. The Configure Multipath LUs dialog box appears. 4. Set the load balancing algorithm, the number of times the same path can be used, the number of times the same path can be used for extended load balancing (random I/O), or dynamic I/O path control for the selected multipath LUs. 5. Check the Storage-system-Name subwindow to make sure that the Multipath LU information has been refreshed. 6. To configure multiple algorithms, repeat steps 3 and 5. Related topics Multipath LU configuration on page 5-21 Configuring multipath LUs for individual hosts on page 5-26 Configuring multipath LUs for an individual storage system on page 5-28 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 Configure Multipath LUs dialog box on page A-87 Configuring the HDLM operating environment for a host You can configure the Hitachi Dynamic Link Manager Software (HDLM) execution environment for each host. Global Link Manager can be used to configure HDLM in each host remotely without having to log in to each host. If a host is newly added as a Global Link Manager resource, the HDLM environment configuration information already configured by the HDLM of 5-28 Managing hosts

105 each host is inherited by Global Link Manager. If necessary, change the HDLM configuration in the Global Link Manager GUI. The ability to configure an HDLM environment depends on the host operating system and HDLM version. From among the configuration items displayed in the following table, the items that can be configured are those that can be viewed in the Global Link Manager GUI. Table 5-3 List of HDLM environment configuration items HDLM environment configuration item Load Balancing In a configuration where multiple paths are connected to an LU, the path load is distributed when multiple paths are used for issuing I/Os. You can set whether to enable load balancing, and set the processing format and check interval. Path use times Load balancing: You can set the number of times the same path can be used in load balancing. Extended load balancing: For sequential I/Os: You can set the number of times the same path can be used for extended load balancing (sequential I/O). For random I/Os: You can set the number of times the same path can be used for extended load balancing (random I/O). Path Health Checking Auto Failback Intermittent Error Monitor Normally, path statuses are checked when I/Os are issued, but this item checks online paths at regular intervals regardless of whether an I/O has been issued. You can set whether to enable the path health checking function, and set the check interval. If there are multiple paths connected to an LU and a criticallevel or error-level error is detected for a path in use, the HDLM failover function switches such paths offline and uses a path that has an online status to continue system operations. After error recovery, the automatic failback function automatically returns the paths, which were made offline by the failover function, to an online state. You can set whether to enable the automatic failback function, and set the check interval. Intermittent errors are random errors that occur due to causes such as a poor cable connection. If an intermittent error occurs when automatic failback is enabled, automatic failback occurs repeatedly, which might cause a drop in I/O performance. To avoid such a situation, for paths where an intermittent error has occurred, intermittent error monitoring automatically removes these paths from being subject to automatic failback. Managing hosts 5-29

106 HDLM environment configuration item Dynamic I/O path control Reservation Level Remove LU Logging Level Trace Level Error Log File Size Number of Error Log Files Trace Log File Size Number of Trace Log Files You can set whether to enable the intermittent error monitoring function, and set the error monitoring time and error frequency. To prevent a drop in I/O performance, HDLM keeps track of controller switching on the storage subsystem side, and dynamically switches the destination controller accordingly. You can choose whether to enable dynamic I/O path control at the host level (all storage subsystems connected to the host) or at the storage subsystem level. You can also set the checking interval of the dynamic I/O path control function. To grant a given host exclusive use of an LU, you can make an exclusive use declaration from that host to the LU. This function protects such an LU from access by other hosts. You can set whether to enable the reservation level function, whether reservation requests are to be ignored, and whether paths to the LU can be reserved for exclusive access. If the host operating system is Windows, the Windows plugand-play functionality can be used for adding and deleting LUs and paths while an HDLM-installed host is operating (dynamic reconfiguration). When the remove LU function is enabled and all paths that are connected to an LU become disconnected, the LU is automatically removed from the managed objects. You can set whether to enable the remove LU function, and whether removal is to occur when there are paths that have the Offline(C) status. Errors detected by HDLM are divided into levels. Logs are collected corresponding to the error levels and are stored on each host. You can set whether to perform log collection, and set the error level to be used as the filtering standard when collecting logs. Traces output by HDLM are divided into levels. Depending on the trace level, traces are output and stored on each host. You can set whether to perform trace output, and the trace level to be used as the filtering standard for output. If error log collection is set for an error log level, you can set the size of the log files to be collected. If error log collection is set for an error log level, you can set the number of log files to be collected. If trace output is set for a trace level, you can set the size of the trace files to be output. If trace output is set for a trace level, you can set the number of trace files to be output Managing hosts

107 Configuring the HDLM operating environment for an individual host To configure the HDLM environment for a host: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree, and then select the target host. The host-name subwindow appears. 3. In the Multipath Configuration tabbed-page, click the Configure button. The Configure HDLM - host-name dialog box appears. 4. Set each of the environment configuration items for the host. 5. Check the host-name subwindow to make sure that the HDLM environment configuration information has been refreshed. Related topics Configuring the HDLM operating environment for a host on page 5-28 Configuring the HDLM operating environment for multiple hosts on page 5-31 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 host-name dialog box on page A-78 Configuring the HDLM operating environment for multiple hosts To configure the HDLM environment for hosts: 1. Select one of the following in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. If the Host Groups subwindow appears, expand the object tree and select the target host group. The host-group-name subwindow appears. 3. In the Hosts tabbed-page, select the check boxes for the target hosts whose HDLM operating environment is to be configured, and then click the Configure Hosts button. The Introduction window for the Multi-host Configuration Wizard appears. 4. Click the Next button. The Configuration Setup window appears. 5. Configure the operating environment. Managing hosts 5-31

108 If you click View Configuration for a host in the Finish window, the host-name subwindow appears. Make sure that the HDLM environment configuration information has been refreshed. Related topics Configuring the HDLM operating environment for a host on page 5-28 Configuring the HDLM operating environment for an individual host on page 5-31 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Introduction on page A-41 Configuration Setup on page A-41 host-name subwindow on page A-52 Configuring alerts for a host You can set whether to perform alert notification from each host to Global Link Manager. SNMP traps are used for alert notification and reception. Alerts cannot be configured for individual multipath management software hosts because the function is used to receive alert information when Global Link Manager manages multiple hosts and detects path errors that occur in individual hosts. By default, hosts are automatically configured so that alerts are reported from each host whenever new hosts are added as Global Link Manager resources or when host information is refreshed. You can modify the alert configuration for each host individually by setting false in the server.snmp.auto_set property in the server.properties file of the Global Link Manager server. Then select hosts and configure alerts for them separately. Even if you set the alert notification function to Off in the Global Link Manager GUI, after you set the value of the server.snmp.auto_set property to true, the alert notification setting will be changed automatically to On when host information is refreshed. For details about the server.snmp.auto_set property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Alert notification can be configured only if the HDLM version of the host is 5.8 or later, or when you are using DMP or HP-UX multipath. If the HDLM version is earlier than 5.8, the Alert tab is not displayed in the host-name subwindow selected in the Global Link Manager GUI. To configure alerts for a host: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears Managing hosts

109 2. Expand the object tree and select the target host. The host-name subwindow appears. 3. In the Alert tabbed-page, click the Configure Alerts button. The Configure Alerts - host-name dialog box appears. 4. Set whether to report alerts from the host. 5. Check the host-name subwindow to make sure that the alert configuration information has been refreshed. 6. If alerts are configured to be reported, confirm that the alerts are being reported normally. An alert (message ID: KAPL04042-I) that indicates changing the alert setup has finished is reported from configured hosts. In the Explorer menu, click the Alerts submenu, and check the alert list to confirm that the alert has been reported. Related topics Managing Alerts Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 host-name dialog box on page A-78 Managing hosts 5-33

110 5-34 Managing hosts

111 6 Managing resource groups This chapter describes the functions for managing resource groups and explains how to use these functions. Overview Viewing a list of resource groups Viewing individual resource group information Creating resource groups Editing resource groups Deleting resource groups Adding hosts to a resource group Removing hosts from a resource group Adding users to a resource group Removing users from a resource group Managing resource groups 6-1

112 Overview Resource groups provide a method for controlling user access by grouping hosts (resources) according to purpose and assigning specified groups to specified users. In Global Link Manager, you can use resource group management functions for the following purposes: Setting the various administrators corresponding to the hosts that belong to different organizations or business tasks Setting administrators into multiple groups when administrators have multiple business tasks Resource groups can be managed by users who have the Admin (Global Link Manager management) permission and users who have access permissions for all resources. Users who do not have the Admin (Global Link Manager management) permission can perform operations on hosts in resource groups assigned to those users, and any attached paths or storage systems only. The following figure uses an example to show an overview of resource group management: 6-2 Managing resource groups

113 Figure 6-1 Overview of resource group management The following conditions apply when configuring resource groups: Multiple hosts (resources) can be configured for each resource group. Users can have access permissions for the hosts of multiple resource groups (can be affiliated with multiple resource groups). Resource groups cannot be layered in a hierarchical structure. Managing resource groups 6-3

114 The All Resources group, which has been prepared for managing all resources, cannot be deleted, and its name cannot be changed. You cannot create a resource group that has the same name as this group. A host cannot belong to multiple resource groups, except the All Resources group. Hosts managed by Global Link Manager are automatically set to the All Resources group. Any user can be added to the All Resources group. Users who have the Admin (Global Link Manager management) permission or users of the built-in account (user ID: System) are set in the All Resources group so that they have permissions for all resources. Except for the built-in account user (user ID: System), users who have the Admin (user management) permission can belong to the resource groups only when they also have the Admin (Global Link Manager management), Modify, or View permission. Explorer menu items for managing resource groups The following table shows the Explorer menu items used for managing resource groups, and which Global Link Manager management permissions are required for operating these items. Table 6-1 Explorer menu items for managing resource groups Explorer menu Permissions Submenu Command Admin Modify View Administration Resource Groups Yes No No Functions for managing resource groups The following table shows the functions for managing resource groups, and which Global Link Manager management permissions are required for operating these functions. Table 6-2 List of functions for managing resource groups Functions Permissions Admin Modify View Viewing a list of resource groups Yes No No Viewing individual resource group information Yes No No Creating a resource group Yes No No Editing a resource group Yes No No Deleting a resource group Yes No No Adding hosts to a resource group Yes No No 6-4 Managing resource groups

115 Functions Permissions Admin Modify View Removing hosts from a resource group Yes No No Adding users to a resource group Yes No No Removing users from a resource group Yes No No Related topics Viewing a list of resource groups on page 6-5 Viewing individual resource group information on page 6-5 Creating resource groups on page 6-6 Editing resource groups on page 6-7 Deleting resource groups on page 6-7 Adding hosts to a resource group on page 6-8 Removing hosts from a resource group on page 6-9 Adding users to a resource group on page 6-10 Removing users from a resource group on page 6-11 Viewing a list of resource groups You can view a list of information about all resource groups. The list contains the number of hosts and the number of users in each resource group. To view a list of resource groups: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears with a list of resource groups. Related topics Viewing individual resource group information on page 6-5 Resource Groups subwindow on page A-186 Viewing individual resource group information You can view information for each resource group. This information includes: Summarized information for the resource group (including the resource name and the number of hosts and users within each resource group) A list of hosts that belong to the resource groups A list of users that belong to the resource groups Managing resource groups 6-5

116 Users who have the Admin (Global Link Manager management) permission are always configured to be in the All Resources group so that they have permissions for all resources. To check resource group information about users who have the Admin (Global Link Manager management) permission, specify and check the All Resources group. To view resource group information: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group or the All Resources group. The resource-group-name subwindow appears with the resource group information. Related topics Viewing a list of resource groups on page 6-5 Resource Groups subwindow on page A-186 resource-group-name subwindow on page A-188 Creating resource groups The following procedure describes how to create resource groups. When creating new resource groups, decide how to divide the groups on the basis of the organizations, responsibilities, and the relationships with the responsible users. You cannot create a resource group named All Resources, because the All Resources group is the default resource group to which all hosts (resources) and users who have the Admin (Global Link Manager management) permission are automatically configured. To create a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Click the Create Group button. The Create Resource Group dialog box appears. 3. Register the information for each resource group to be created. 4. Check the Resource Groups subwindow to make sure that the information for registered resource groups is displayed. Related topics Editing resource groups on page 6-7 Deleting resource groups on page 6-7 Adding hosts to a resource group on page Managing resource groups

117 Removing hosts from a resource group on page 6-9 Adding users to a resource group on page 6-10 Removing users from a resource group on page 6-11 Resource Groups subwindow on page A-186 Create Resource Group dialog box on page A-187 Editing resource groups The following procedure describes how to edit resource groups. To edit resource groups, you need to edit the properties of resource groups. You cannot edit the All Resources group because it is the default resource group to which all hosts (resources) and users who have the Admin (Global Link Manager management) permission are automatically configured. To edit a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group. The resource-group-name subwindow appears. 3. Click the Edit Properties button. The Edit Properties - resource-group-name dialog box appears. 4. Edit and refresh the resource group information. 5. Check the resource-group-name subwindow to make sure that the information for resource groups has been refreshed. Related topics Creating resource groups on page 6-6 Deleting resource groups on page 6-7 Deleting resource groups The following procedure describes how to delete resource groups. You can delete the single resource group that is currently displayed or, from a list, you can select and delete multiple resource groups at the same time. You cannot delete the All Resources group, however, because it is the default resource group to which all hosts (resources) and users who have the Admin (Global Link Manager management) permission are automatically set. Related topics Creating resource groups on page 6-6 Editing resource groups on page 6-7 Managing resource groups 6-7

118 Deleting individual resource groups To delete individual resource groups: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group. The resource-group-name subwindow appears. 3. Click the Delete Group button. The Delete Resource Group - resource-group-name dialog box appears. 4. Confirm the resource group information to be deleted and perform the deletion. 5. Check the Resource Groups subwindow to make sure that the resource group information has been deleted. Related topics Resource Groups subwindow on page A-186 resource-group-name subwindow on page A-188 Delete Resource Groups dialog box on page A-187 Deleting multiple resource groups To delete multiple resource groups: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. In the list of resource groups, select the check boxes of the resource groups to be deleted, and then click the Delete Groups button. The Delete Resource Groups dialog box appears. 3. Confirm the resource groups to be deleted and perform the deletion. 4. Check the Resource Groups subwindow to make sure that the resource groups have been deleted. Related topics Resource Groups subwindow on page A-186 Delete Resource Groups dialog box on page A-187 Adding hosts to a resource group You can add host resources to a previously created resource group. The same host cannot be configured for multiple resource groups. You cannot add hosts to the All Resources group because all hosts are automatically configured to the All Resources group. 6-8 Managing resource groups

119 To add hosts to a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group. The resource-group-name subwindow appears. 3. In the Hosts tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 4. Select the check boxes of the hosts you are adding to the resource group, and then execute. 5. Check the resource-group-name subwindow to make sure that the information for the hosts has been added to the resource group. Related topics Removing hosts from a resource group on page 6-9 Adding users to a resource group on page 6-10 Removing users from a resource group on page 6-11 Resource Groups subwindow on page A-186 resource-group-name subwindow on page A-188 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A-190 Removing hosts from a resource group You can remove host resources from a resource group. Note that you cannot remove hosts from the All Resources group because all hosts are automatically configured to the All Resources group. To remove hosts from a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group. The resource-group-name subwindow appears. 3. In the Hosts tabbed-page, select the check boxes of the hosts you are removing, and then click the Remove Hosts button. The Remove Hosts dialog box appears. 4. Confirm the hosts to be removed and execute. 5. Check the resource-group-name subwindow to make sure that the hosts have been removed from the resource group. Related topics Managing resource groups 6-9

120 Adding hosts to a resource group on page 6-8 Adding users to a resource group on page 6-10 Removing users from a resource group on page 6-11 Resource Groups subwindow on page A-186 resource-group-name subwindow on page A-188 Remove Hosts dialog box (removing from resources) on page A-36 Remove Hosts dialog box (removing from a resource group) on page A-191 Adding users to a resource group You can add users to a previously created resource group. A single user can be assigned to multiple resource groups. Also, users who have Modify or View permissions can be configured for the All Resources group. Users who have the Admin (Global Link Manager management) permission and the built-in account user (user ID: System) do not have to be added to resource groups because those users are automatically configured to the All Resources group. If you change the setting of the correspondence between the user who is currently logging in and the resource group, the change will be applied the next time the user logs in. To add users to a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group or the All Resources group. The resource-group-name subwindow or the All Resources subwindow appears. 3. In the Users tabbed-page, click the Add Users button. The Add Users - resource-group-name dialog box appears. 4. Select the check boxes of the users you are adding to the resource group, and then execute. 5. Check the resource-group-name subwindow to make sure the information for the users has been added to the resource group. Related topics Adding hosts to a resource group on page 6-8 Removing hosts from a resource group on page 6-9 Removing users from a resource group on page 6-11 Resource Groups subwindow on page A-186 resource-group-name subwindow on page A Managing resource groups

121 Add Users - resource-group-name dialog box on page A-191 Removing users from a resource group You can remove users from a resource group. Note that you cannot remove users who have the Admin (Global Link Manager management) permission and the built-in account user (user ID: System) from the All Resource groups because those users are automatically configured to the All Resources group. If you change the setting of the correspondence between the user who is currently logging in and the resource group, the change will be applied the next time the user logs in. To remove users from a resource group: 1. In the Explorer menu, click Administration and choose Resource Groups. The Resource Groups subwindow appears. 2. Expand the object tree and select the target resource group or the All Resources group. The resource-group-name subwindow or the All Resources subwindow appears. 3. In the Users tabbed-page, select the check boxes of the users you are removing, and then click the Remove Users button. The Remove Users dialog box appears. 4. Confirm the users to be removed, and then execute. 5. Check the resource-group-name subwindow to make sure that the users have been removed from the resource group. Related topics Adding hosts to a resource group on page 6-8 Removing hosts from a resource group on page 6-9 Adding users to a resource group on page 6-10 Resource Groups subwindow on page A-186 resource-group-name subwindow on page A-188 Remove Users dialog box on page A-192 Managing resource groups 6-11

122 6-12 Managing resource groups

123 7 Managing host groups This chapter describes the functions for managing host groups and describes how to use these functions. Overview Viewing a list of host groups Viewing individual host group information Creating host groups Editing host groups Deleting host groups Viewing host information for a host group Adding hosts to a host group Removing hosts from a host group Refreshing host information for host groups Managing host groups 7-1

124 Overview You can divide hosts managed by Global Link Manager into multiple groups and arrange those groups in a hierarchical structure as required. Each user can create groups of hosts to be managed, thus achieving independent user management. In Global Link Manager, you can use the functions for managing host groups for the following purposes: Grouping many managed hosts to make finding a particular host Managing hosts by hierarchal organization Viewing host or path information and changing the path status for individual groups The following figure uses an example to show an overview of host group management: 7-2 Managing host groups

125 Figure 7-1 Overview of host group management The following conditions apply when configuring host groups: Multiple hosts can be configured into one host group. One host can be configured into multiple host groups. When host groups are layered in a hierarchical structure, host groups cannot be mixed with hosts under a host group. Explorer menu items for managing host groups The following table shows the Explorer menu items used for managing host groups, and which Global Link Manager management permissions are required for operating these items. Managing host groups 7-3

126 Table 7-1 Explorer menu items for managing host groups Explorer menu Permissions Submenu Command Admin Modify View My Groups Host Groups Yes Yes Yes Functions for managing host groups The following table shows the functions for managing host groups, and which Global Link Manager management permissions are required for operating these functions. Table 7-2 List of functions for managing host groups Functions Permissions Admin Modify View Viewing a list of host groups Yes Yes Yes Viewing individual host group information Yes Yes Yes Creating a host group Yes Yes Yes Editing a host group Yes Yes Yes Deleting a host group Yes Yes Yes Viewing host information for host groups Yes Yes Yes Adding hosts to a host group Yes Yes Yes Removing hosts from a host group Yes Yes Yes Refreshing host information for host groups Yes Yes No Related topics Viewing a list of host groups on page 7-5 Viewing individual host group information on page 7-5 Creating host groups on page 7-6 Editing host groups on page 7-7 Deleting host groups on page 7-7 Viewing host information for a host group on page 7-8 Adding hosts to a host group on page 7-9 Removing hosts from a host group on page 7-9 Refreshing host information for host groups on page Managing host groups

127 Viewing a list of host groups You can view a list of host groups for all user-created host groups. You can also use the host group icons to check path errors and the update status of host information. Summarized information for all host groups (the number of hosts and the number of paths in each path status) A list of host groups A list of paths for all host groups A list of Multipath LUs for all host groups To view a list of host groups: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears with a list of host groups. Related topics Viewing individual host group information on page 7-5 Viewing host information for a host group on page 7-8 Host Groups subwindow on page A-147 Viewing individual host group information You can view information for each host group. When the host group to be displayed is a parent group, you can view the following information: Summarized information for host groups under that parent group (the number of hosts and the number of paths in each path status) A list of child groups A list of paths under that parent group List of Multipath LUs under that parent group When the host group to be displayed is not layered in a hierarchical structure or the host group is a child group, you can view the following information: Summarized information for host groups (the number of hosts and the number of paths in each path status) A list of hosts belonging to that host group A list of paths belonging to that host group A list of Multipath LUs belonging to that host group To view host group information: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. Managing host groups 7-5

128 The host-group-name subwindow appears with host group information. Related topics Viewing a list of host groups on page 7-5 Viewing host information for a host group on page 7-8 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Creating host groups The following procedure describes how to create host groups. When creating new host groups, you must consider the organization and application when determining the group hierarchy and host group divisions. To create a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Perform one of the following steps: If the host groups are not layered in a hierarchical structure or if you are creating a parent group, skip to step 3. If you are creating a child group, expand the object tree and select the target parent group. The host-group-name subwindow appears. 3. From the Groups tabbed-page or the Objects tabbed-page, click the Create Group button. The Create Host Group dialog box appears. 4. Register the information for the host group to be created. Check the Host Groups subwindow or the host-group-name subwindow to make sure that the information for the registered host group is displayed. If you want to add a host to a host group that has been created, proceed to the next step. 5. To add a host to a host group that has been created, click the Add Hosts button in the Create Host Group dialog box (result). The Add Hosts dialog box appears. 6. Select the check box for the host to add to the host group, and then add that host. Check that the information for the host group and the host added to the host group appears in the Host Group subwindow or the host-group-name subwindow. Related topics Editing host groups on page 7-7 Deleting host groups on page 7-7 Adding hosts to a host group on page Managing host groups

129 Removing hosts from a host group on page 7-9 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Create Host Group dialog box on page A-158 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A-190 Editing host groups The following procedure describes how to edit host groups. To edit host groups, you need to edit the properties of host groups. To edit a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. 3. Click the Edit Properties button. The Edit Properties - host-group-name dialog box appears. 4. Edit and then refresh the host group information. 5. Check the host-group-name subwindow to make sure that the host group information has been refreshed. Related topics Creating host groups on page 7-6 Deleting host groups on page 7-7 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Edit Properties - host-group-name dialog box on page A-176 Deleting host groups The following procedure describes how to delete host groups. To delete a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Perform one of the following steps: If the host group is not layered in a hierarchical structure or if you are deleting a parent group, skip to step 3. Managing host groups 7-7

130 If you are deleting a child group, expand the object tree and select the target parent group. The host-group-name subwindow appears. 3. In the Groups tabbed-page, select the check boxes of the host groups you are deleting, and then click the Delete Groups button. The Delete Host Groups dialog box appears. 4. Confirm the host groups to be deleted and perform the deletion. 5. Check the Host Groups subwindow or the host-group-name subwindow to make sure that the host groups have been deleted. Related topics Creating host groups on page 7-6 Editing host groups on page 7-7 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Delete Host Groups dialog box on page A-159 Viewing host information for a host group You can view the following information for each host: Summarized information for a host (including such information as the host name, operating system, multipath management software version #, IP address, and the number of paths in each of the path statuses) A list of paths A list of Multipath LUs A list of HBA ports HDLM environment configuration information Alert configuration information # If the HDLM version of a host is earlier than 5.6, only the version and revision numbers are displayed, and the service pack version and corrected version information are not displayed. When the host OS is VMware, the HDLM version of the host is displayed, not that of the remote management client. To view host information for a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears with host information for the host group. Related topics 7-8 Managing host groups

131 Viewing a list of host groups on page 7-5 Viewing individual host group information on page 7-5 Host Groups subwindow on page A-147 host-name subwindow on page A-52 Adding hosts to a host group You can add hosts to a previously created host group. You can set a single host into multiple host groups. If the host groups are layered in a hierarchical structure, only child groups can be configured under host groups that are to become parent groups. Hosts cannot be configured under parent groups. To add hosts to a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. 3. From the Hosts tabbed-page or the Objects tabbed-page, click the Add Hosts button. The Add Hosts dialog box appears. 4. Select the check boxes of the hosts you are adding to the host group, and then execute. 5. Check the host-group-name subwindow to make sure that the hosts added to the host group are displayed. Related topics Removing hosts from a host group on page 7-9 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Add Hosts dialog box (adding to resources) on page A-26 Add Hosts dialog box (adding to a host group) on page A-176 Add Hosts dialog box (adding to a resource group) on page A-190 Removing hosts from a host group You can remove hosts from a host group. To remove hosts from a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. Managing host groups 7-9

132 3. In the Hosts tabbed-page, select the check boxes of the hosts you are removing, and then click the Remove Hosts button. The Remove Hosts dialog box appears. 4. Confirm the hosts to be removed and perform the deletion. 5. Check the host-group-name subwindow to make sure that the hosts have been removed from the host group. Related topics Adding hosts to a host group on page 7-9 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Remove Hosts dialog box (removing from resources) on page A-36 Remove Hosts dialog box (removing from a resource group) on page A-191 Refreshing host information for host groups The following procedure describes how to refresh host information for host groups. When you perform this task, the configuration information for each host is collected and the most recent information is displayed on the Global Link Manager graphical-user interface (GUI). For information about how to refresh host information, see Refreshing host information on page You can refresh host information for the hosts in the host group that is currently displayed, or for the hosts in multiple host groups selected from a list. Refreshing a single host group To refresh host information for a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears. 3. Click the Refresh Group button. The Refresh Host Group - host-group-name dialog box appears. 4. Check the host group to be refreshed, and then perform the refresh. 5. Check the host-group-name subwindow to make sure that the host information has been refreshed. Related topics Configuring alerts for a host on page 5-32 Refreshing host information on page 5-15 Refreshing host information for a single host on page Managing host groups

133 Refreshing host information for multiple hosts on page 5-19 Refreshing multiple host groups on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Refresh Host Groups dialog box on page A-159 Refreshing multiple host groups To refresh host information for multiple host groups at once: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. In the Groups tabbed-page, select the check boxes of the host groups to be refreshed, and then click the Refresh Groups button. The Refresh Host Groups dialog box appears. 3. Check the hosts that belong to the selected host groups, and then perform the refresh. 4. Check the Host Groups subwindow to make sure that the host group information has been refreshed. Related topics Configuring alerts for a host on page 5-32 Refreshing host information on page 5-15 Refreshing host information for a single host on page 5-18 Refreshing host information for multiple hosts on page 5-19 Refreshing a single host group on page 5-20 Refreshing all hosts connected to a CHA port on page 5-21 Host Groups subwindow on page A-147 Refresh Host Groups dialog box on page A-159 Managing host groups 7-11

134 7-12 Managing host groups

135 8 Managing paths This chapter describes the functions for managing paths and explains how to use these functions. Overview Viewing a summary of paths Viewing a list of paths Filtering and viewing a list of paths Switching path status Resetting the number of path I/O counts and I/O errors Viewing a list of storage systems Viewing individual storage systems information Viewing a list of physical storage systems (e.g. of a virtual storage machine) Viewing physical storage system information (e.g. of a virtual storage machine) Show list of lost paths Managing paths 8-1

136 Overview Typically, when paths connecting hosts and storage systems are managed, multiple online paths are set for a single logical unit to distribute the workload, and the bandwidth is adjusted by pooling offline paths. The various functions used to manage paths in Global Link Manager enable users to perform the following: Acquire an understanding of path information for multiple hosts Use the icons displayed for the hosts, host groups, and storage systems to check path errors If you are using HDLM for the hosts, or if you are using HP-UX multipath for multipath management software, display paths by status or check the number of I/O counts and I/O errors to determine the location of path errors. Control bandwidth by browsing paths and changing their status as necessary for items such as storage systems and LUs Handle errors by switching path statuses for CHA or HBA ports The status of a path can be switched if you are using one of the following multi-path management software products: HDLM HP-UX multipath The following figure uses an example to show an overview of path management: 8-2 Managing paths

137 Figure 8-1 Overview of path management Explorer menu items for managing paths The following table shows the Explorer menu items used for managing paths, and which Hitachi Global Link Manager Software (Global Link Manager) management permissions are required for operating these items. Table 8-1 Explorer menu items for managing paths Explorer menu Permissions Submenu Command Admin Modify View Resources Hosts Yes Yes Yes Storage systems Yes Yes Yes My Groups Host Groups Yes Yes Yes Functions for managing paths The following table shows the functions for managing paths, and which Global Link Manager management permissions are required for operating these functions. Managing paths 8-3

138 Table 8-2 List of functions for managing paths Functions Permissions Admin Modify # View # Viewing a summary of paths Yes Yes Yes Viewing a list of paths Yes Yes Yes Switching a path status Yes Yes No Resetting the number of path I/O counts and I/O errors Yes Yes No Viewing a list of storage systems Yes Yes Yes Viewing individual storage system information Yes Yes Yes # A user with Modify or View permission can perform this function only for objects (such as paths, HBA ports, and storage systems) that belong to hosts affiliated with that user. Related topics Viewing a summary of paths on page 8-4 Viewing a list of paths on page 8-7 Resetting the number of path I/O counts and I/O errors on page 8-19 Viewing a list of storage systems on page 8-20 Viewing individual storage systems information on page 8-20 Viewing a list of physical storage systems (e.g. of a virtual storage machine) on page 8-21 Viewing physical storage system information (e.g. of a virtual storage machine) on page 8-22 Viewing a summary of paths You can view summarized information for the number of paths in each path status for paths that belong to all hosts for which you have access permission. Related topics Viewing a list of paths on page 8-7 Viewing a summary of all paths To view a path summary for all paths: 1. In the Explorer menu, click Resources and choose Hosts. The Hosts subwindow appears with a summary of paths that belong to all hosts. 8-4 Managing paths

139 Related topics Viewing a summary of paths on page 8-4 Viewing a summary of paths for a single host on page 8-5 Viewing a summary of paths for a host group on page 8-5 Viewing a summary of paths for a storage system on page 8-6 Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-6 Hosts subwindow on page A-4 Viewing a summary of paths for a single host To view a path summary for a single host: 1. In the Explorer menu, perform one of the following steps: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears with a summary of paths for the host. Related topics Viewing a summary of paths on page 8-4 Viewing a summary of all paths on page 8-4 Viewing a summary of paths for a host group on page 8-5 Viewing a summary of paths for a storage system on page 8-6 Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-6 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 Viewing a summary of paths for a host group To view a path summary for a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears with a summary of paths for the host group. Related topics Viewing a summary of paths on page 8-4 Viewing a summary of all paths on page 8-4 Managing paths 8-5

140 Viewing a summary of paths for a single host on page 8-5 Viewing a summary of paths for a storage system on page 8-6 Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-6 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Viewing a summary of paths for a storage system To view a path summary for a storage system: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears with a summary of paths for the storage system. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a summary of paths on page 8-4 Viewing a summary of all paths on page 8-4 Viewing a summary of paths for a single host on page 8-5 Viewing a summary of paths for a host group on page 8-5 Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-6 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 Viewing a summary of paths for a physical storage system (e.g. of a virtual storage machine) 1. In the Explorer menu, click Resources and then select Physical Storage Information. The Storage systems subwindow (physical storage information) appears. 2. Expand the object tree and then select the target storage system. The Storage-system-Name subwindow (physical storage information) appears and displays a summary of paths for the physical storage system. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a summary of paths on page 8-4 Viewing a summary of all paths on page 8-4 Viewing a summary of paths for a single host on page 8-5 Viewing a summary of paths for a host group on page Managing paths

141 Viewing a summary of paths for a storage system on page 8-6 Viewing a list of paths You can view information on paths that belong to all hosts for which you have access permissions. Related topics Viewing a summary of paths on page 8-4 Viewing a list of paths for a single host To view a list of paths for a single host: 1. In the Explorer menu, perform one of the following steps: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears with the Paths tabbed-page displaying a list of paths for the host. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 Viewing a list of paths for a host HBA port To view a list of paths for a host HBA port: 1. In the Explorer menu, perform one of the following steps: Click Resources and choose Hosts. Managing paths 8-7

142 Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears. 3. In the HBA Ports tabbed-page, or Port / Channel tabbed-page, select the check boxes of the HBA ports, and then click the Show Paths button. The Show Paths - host-name dialog box appears with a list of paths for the selected HBA port. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 host-name dialog box on page A-78 Viewing a list of paths for a host group To view a list of paths for a host group: 1. In the Explorer menu, click My Groups and choose Host Groups. The Host Groups subwindow appears. 2. Expand the object tree and select the target host group. The host-group-name subwindow appears with the Paths tabbed-page displaying a list of paths for the host group. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page Managing paths

143 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Hosts subwindow on page A-4 host-group-name subwindow on page A-160 Viewing a list of paths for a storage system To view a list of paths for a storage system: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears with the Paths tabbedpage displaying a list of paths for the storage system. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 Viewing a list of paths for a CHA port of a storage system To view a list of paths for a CHA port of a storage system: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears. Select the tab that corresponds to the target multipath management software as necessary. Managing paths 8-9

144 3. In the CHA Ports tabbed-page, or Targets tabbed-page, select the check boxes of the CHA ports, and then click the Show Paths button. The Show Paths - Storage-system-Name dialog box appears with a list of paths for the selected CHA port. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 storage-system-name dialog box on page A-68 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) 1. In the Explorer menu, click Resources and then select Physical Storage Information. The Storage systems subwindow (physical storage information) appears. 2. Expand the object tree and then select the target storage system. The Storage-system-Name subwindow (physical storage information) appears. The Paths tab lists the paths for the physical storage system. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page Managing paths

145 Viewing a list of paths that have a specific status on page 8-12 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) 1. In the Explorer menu, click Resources and then select Physical Storage Information. The Storage systems subwindow (physical storage information) appears. 2. Expand the object tree and then select the target storage system. The Storage-system-Name subwindow (physical storage information) appears. Select the tab that corresponds to the target multipath management software as necessary. 3. In the CHA Ports List tab, select the check boxes of the CHA ports, and then click the Show Paths button. The Show Paths dialog box (physical storage information) appears and lists the paths for each selected CHA port. Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a multipath LU on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Viewing a list of paths for a multipath LU You can view a list of paths for individual Multipath LUs by displaying a list of Multipath LUs categorized by host, host group, or storage system. To view a list of Multipath LU paths: 1. In the Explorer menu, perform one of the following steps: Click Resources and choose Hosts. Click Resources and choose Storage systems. Click My Groups and choose Host Groups. The Hosts subwindow, Storage systems subwindow, or Host Groups subwindow appears. 2. Expand the object tree and select the target host, storage system, or host group. Managing paths 8-11

146 The host-name, Storage-system-Name, or host-group-name subwindow appears. Select the tab that corresponds to the target multipath management software as necessary. 3. In the Multipath LUs tabbed-page, or Disks tabbed-page, select the check box of a multi-path LU, and then click the Show Paths button. One of the following dialog boxes appears with a list of paths for the selected Multipath LU: Show Paths - host-name dialog box Show Paths - Storage-system-Name dialog box Show Paths - host-group-name dialog box Related topics Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths that have a specific status on page 8-12 Hosts subwindow on page A-4 Storage systems subwindow on page A-105 Host Groups subwindow on page A-147 host-name subwindow on page A-52 storage-system-name subwindow on page A-107 host-group-name subwindow on page A-160 host-name dialog box on page A-78 storage-system-name dialog box on page A-68 host-group-name subwindow on page A-160 Viewing a list of paths that have a specific status To view a list of paths that have a specific status 1. Display a path summary for a host or storage system: To view a summary of all paths, click here. To view a summary of paths for a single host, click here. To view a summary of paths for a host group, click here. To view a summary of paths for a storage system, click here Managing paths

147 To view a summary of paths for a physical storage system (for example, a virtual storage machine), click here. 2. Click the link for the number of paths in the desired path status shown in the path summary. The Show Paths or Show Paths - object-name dialog box appears with a list of paths for the selected path status. Related topics Viewing a summary of paths on page 8-4 Viewing a list of paths on page 8-7 Viewing a list of paths for a single host on page 8-7 Viewing a list of paths for a host HBA port on page 8-7 Viewing a list of paths for a host group on page 8-8 Viewing a list of paths for a storage system on page 8-9 Viewing a list of paths for a CHA port of a storage system on page 8-9 Viewing a list of paths for a physical storage system (e.g. of a virtual storage machine) on page 8-10 Viewing a list of paths for a CHA port of a physical storage system (e.g. of a virtual storage machine) on page 8-11 Viewing a list of paths for a multipath LU on page 8-11 Show Paths dialog box on page A-9 Filtering and viewing a list of paths When there is a large volume of path information, it might be helpful to specify that only certain information is to be displayed. The following table lists the display conditions that can be specified in order to filter paths. You can use the AND operation to combine items. Depending on where the Filter - Path dialog box was opened, some items might not be displayed. Table 8-3 Conditions for filtering a list of paths Item Multipath management software HDLM HP-UX multipat h Status Equal or not equal to the status selected from a drop-down list. Yes Yes LDEV ID Include or do not include a specified character string. Yes Yes LDEV Label Include or do not include a specified character string. Yes No Managing paths 8-13

148 Item Multipath management software HDLM HP-UX multipat h Storage system Name Include or do not include a specified character string. Yes Yes Physical LDEV ID Include or do not include a specified character string. Yes No Virtual LDEV ID Include or do not include a specified character string. Yes No Physical Storage system Name Include or do not include a specified character string. Yes No Virtual Storage system Name Include or do not include a specified character string. Yes No Physical CHA Include or do not include a specified character string. Yes No Virtual CHA Include or do not include a specified character string. Yes No CHA Include or do not include a specified character string. Yes Yes Multipath LU Include or do not include a specified character string. Yes Yes Host Name Include or do not include a specified character string. Yes Yes Disk Number Equal or not equal to the value selected from a drop-down list. Yes No HBA Include or do not include a specified character string. Yes Yes HBA WWN Include or do not include a specified character string. Yes Yes I/O Count Less than, equal to, or greater than the specified value. Yes Yes I/O Errors Less than, equal to, or greater than the specified value. Yes Yes Type Equal or not equal to the type selected from a drop-down list. Yes No SLPR Equal or not equal to the value selected from a drop-down list. Yes No CLPR Equal or not equal to the value selected from a drop-down list. Yes No Path ID Less than, equal to, or greater than the specified value. Yes Yes 8-14 Managing paths

149 Item Multipath management software HDLM HP-UX multipat h Path Name Include or do not include a specified character string. Yes Yes Intermittent Error Equal or not equal to the value selected from a drop-down list. Yes No To filter and view a list of paths: 1. Display a list of paths for a host or storage system. To view a list of paths for a single host, click here. To view a list of paths for a host group, click here. To view a list of paths for a list of host groups, click here. To view a list of paths for a storage system, click here. To view a list of paths for a physical storage system (for example, a virtual storage machine), click here. 2. Click the Filter button. The Filter - Paths dialog box appears. 3. Specify conditions and execute filtering. The list of paths filtered according to the specified conditions is displayed. To clear filtering, click the Filter Off button. Filtering is also cleared when you perform an operation on the list of paths and then refresh the list, and when you click an Explorer menu item to move to another subwindow. Related topics Viewing a list of paths on page 8-7 Filter - Paths dialog box on page A-103 Switching path status You can check the statuses of paths for multiple hosts by confirming the statuses in a list of paths, and switch the status of a path by executing an online or offline operation. The status of a path can be switched if you are using one of the following multi-path management software products: HDLM HP-UX multipath To control the bandwidth, paths can be switched online or offline to increase or decrease the number of paths that perform I/Os. Paths can also be Managing paths 8-15

150 temporarily switched offline when an error occurs or when replacing hardware, and then returned to the online state. You can also verify that a corresponding alternate path exists before you switch a path offline. The following figure shows path status transitions, caused by a user switching path statuses, or by automatic detection of an error or recovery: Figure 8-2 Status transition of HDLM paths 8-16 Managing paths

151 Figure 8-3 Status transition of HDLM paths (P-VOL in HAM environment) Figure 8-4 Status transition of HP-UX multipath paths Paths in a category displayed in the list of paths can be placed online or offline. Managing paths 8-17

152 If you place a path online from Global Link Manager when the path is physically disconnected, the execution result is displayed in a dialog box. However, the result shown in the dialog box might differ from the actual execution result. To check the correct execution result, refresh the host information after placing a path online. Related topics Viewing a list of paths on page 8-7 Switching paths online To switch paths online: 1. Display a list of paths for a host or storage system. To view a list of paths for a single host, click here. To view a list of paths for a host HBA port, click here. To view a list of paths for a host group, click here. To view a list of paths for a storage system, click here. To view a list of paths for a CHA port of a storage system, click here. To view a list of paths for a physical storage system (for example, a virtual storage machine), click here. To view a list of paths for a CHA port of a physical storage system (for example, a virtual storage machine), click here. To view a list of paths for a Multipath LU, click here. To view a list of paths that have a specific status, click here. 2. From the list of paths, select the check boxes of the paths to be placed in the Online status, and then click the Set Online button. The Set Online dialog box appears. 3. Confirm the paths to be placed in the Online status, and then perform the operation. 4. Check the path list to make sure that the path statuses have changed. Related topics Set Online dialog box on page A-14 Switching paths offline To switch paths offline: 1. Display a list of paths for a host or storage system. To view a list of paths for a single host, click here. To view a list of paths for a host HBA port, click here. To view a list of paths for a host group, click here. To view a list of paths for a storage system, click here. To view a list of paths for a CHA port of a storage system, click here Managing paths

153 To view a list of paths for a physical storage system (for example, a virtual storage machine), click here. To view a list of paths for a CHA port of a physical storage system (for example, a virtual storage machine), click here. To view a list of paths for a Multipath LU, click here. To view a list of paths that have a specific status, click here. 2. From the list of paths, select the check boxes of the paths to be placed in the Offline(C) status, and then click the Set Offline button. The Set Offline dialog box appears. 3. Confirm the paths to be placed in the Offline(C) status, and then perform the operation. Check the path list to make sure that the path statuses have changed. If there is a path that cannot be placed in the Offline(C) status because no alternate path exists (that is, if all paths in the Online status that access a particular LU would be disabled), the applicable path is highlighted in the Set Offline dialog box. Related topics Set Offline dialog box on page A-21 Resetting the number of path I/O counts and I/O errors If you are using HDLM for the hosts, you can reset the number of path I/O counts and I/O errors that are counted for the HDLM of each host. You can use Global Link Manager to reset these values remotely without having to log in to each host. Resetting the number of I/O counts and I/O errors after you have taken action to resolve an error, performed hardware maintenance, or changed the configuration of the HDLM operating environment enables you to check the I/O counts and errors under normal operating conditions when you refresh host information. You can also check the operating status of the loadbalancing function in the same way. To reset the number of I/O counts and I/O errors: 1. In the Explorer menu, perform one of the following steps: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or the Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears. 3. Click the Reset I/O Count button. The Reset I/O Count - host-name dialog box appears. 4. Confirm the items to be reset, and then execute. Managing paths 8-19

154 5. In the host-name subwindow, confirm that both the number of I/O counts and the number of I/O errors have been reset to 0. Note you can reset the I/O count for a path and the number of I/O errors from the Refresh Hosts dialog box that is displayed by clicking the Refresh Hosts button. Related topics Viewing a list of paths on page 8-7 Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-group-name subwindow on page A-160 Reset I/O Count - host-name dialog box on page A-87 Viewing a list of storage systems You can view the following information about the storage systems connected to all hosts for which you have access permissions. Using the host storage system icons, you can check path errors and the update status of host information. Summarized information for paths that belong to all storage systems (the number of paths in each of the path statuses) A list of storage systems To view a list of storage systems: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears with a list of storage system information. Related topics Viewing individual storage systems information on page 8-20 Viewing a list of physical storage systems (e.g. of a virtual storage machine) on page 8-21 Viewing physical storage system information (e.g. of a virtual storage machine) on page 8-22 Storage systems subwindow on page A-105 Viewing individual storage systems information You can view the following information for each storage system: Summarized information for paths (the number of paths in each of the path statuses) A list of paths A list of CHA ports 8-20 Managing paths

155 A list of Multipath LUs You can view storage system information to check which paths, hosts, or user applications are connected to a storage system. This information is required when you need to know which path statuses to switch for operations such as replacing hardware related to a storage system or controlling the bandwidth for paths to an individual CHA port. To view storage system information: 1. In the Explorer menu, click Resources and choose Storage systems. The Storage systems subwindow appears. 2. Expand the object tree and select the target storage system. The Storage-system-Name subwindow appears with storage system information. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a list of storage systems on page 8-20 Viewing a list of physical storage systems (e.g. of a virtual storage machine) on page 8-21 Viewing physical storage system information (e.g. of a virtual storage machine) on page 8-22 Storage systems subwindow on page A-105 storage-system-name subwindow on page A-107 Viewing a list of physical storage systems (e.g. of a virtual storage machine) You can view the following information about the physical storage systems connected to all hosts for which you have access permissions. You can check path errors and the update status of host information by using the icons for each storage system. Summarized information for the paths that belong to all the physical storage systems (the number of paths in each of the path statuses) A list of physical storage systems To view a list of physical storage systems: 1. In the Explorer menu, click Resources and then select Physical Storage Information. The Storage systems subwindow (physical storage information) appears and lists the physical storage system information. Related topics Viewing a list of storage systems on page 8-20 Viewing individual storage systems information on page 8-20 Managing paths 8-21

156 Viewing physical storage system information (e.g. of a virtual storage machine) on page 8-22 Storage systems subwindow (physical storage information) on page A-125 Viewing physical storage system information (e.g. of a virtual storage machine) You can view the following information for each physical storage system: Summarized information for paths (the number of paths in each of the path statuses) A list of paths A list of CHA ports A list of Multipath LUs You can view the physical storage system information to check which paths, hosts, or user applications are connected to a physical storage system. This information is required when you need to know which path statuses to switch for operations such as replacing hardware related to a physical storage system or controlling the bandwidth for paths to an individual CHA port. To view the physical storage system information: 1. In the Explorer menu, click Resources and then select Physical Storage Information. The Storage systems subwindow (physical storage information) appears. 2. Expand the object tree and then select the target storage system. The Storage-system-Name subwindow (physical storage information) appears and displays the physical storage system information. Select the tab that corresponds to the target multipath management software as necessary. Related topics Viewing a list of storage systems on page 8-20 Viewing individual storage systems information on page 8-20 Viewing a list of physical storage systems (e.g. of a virtual storage machine) on page 8-21 Storage systems subwindow (physical storage information) on page A-125 storage-system-name subwindow (physical storage information) on page A Managing paths

157 Show list of lost paths In the summary area, if you click the number of lost paths, the Show Lost Paths - host-name dialog box appears. To display the Show Lost Paths - host-name dialog box: 1. Perform one of the following steps in the Explorer menu: Click Resources and choose Hosts. Click My Groups and choose Host Groups. The Hosts subwindow or Host Groups subwindow appears. 2. Expand the object tree and select the target host. The host-name subwindow appears. 3. In the path summary area, click Lost Path. The Show Lost Paths - host-name dialog box appears. Note that Lost Path is not displayed when the lost paths are not detected. Related topics Hosts subwindow on page A-4 Host Groups subwindow on page A-147 host-name subwindow on page A-52 Managing paths 8-23

158 8-24 Managing paths

159 9 Managing alerts This chapter describes the functions for managing alerts and explains how to use these functions. Overview Viewing a list of alerts Viewing alert filtering Marking alerts as read Marking alerts as unread Deleting alerts Deleting all alerts Alert transfer settings Configuring the lost path check option Configuring to report alerts Managing alerts 9-1

160 Overview Global Link Manager is used to manage two types of alerts. Alerts reported from the hosts using an SNMP trap When a path error occurs on hosts managed by Global Link Manager, an SNMP trap is used to report error information from each host in the form of an alert. You can set up the SNMP trap notification function for hosts of HDLM version 5.8 or later, or if you are using DMP or HP-UX multipath. By default, the system is configured to report alerts from each host. To change this setting, use the server.snmp.auto_set property of the Global Link Manager server server.properties file. For details about the server.snmp.auto_set property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Alerts reported if path errors are detected when host information is updated, or due to a check for lost paths. Error information can be reported for each host in the form of an alert if a path error is detected when information about hosts managed by Global Link Manager is refreshed. By default, the system is configured to report alerts from each host. To change this setting, use the server.trouble_detection.enable property of the Global Link Manager server server.properties file. For details about the server.trouble_detection.enable property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Also, by setting the option for checking lost paths, an alert is reported if degradation of path redundancy is detected for paths that are in a state in which they can issue I/Os normally, or are in a blocked state due to operations performed offline. By default, the system is configured not to report alerts when checking lost paths. To change this setting, see Configuring the lost path check option on page When an alert is reported, the number of unconfirmed alerts displayed on the Dashboard menu of the Global Link Manager GUI is refreshed. You can forward alerts from the Global Link Manager server to the SNMP transfer destination server, where any desired application can be used to manage the alerts. Alerts are collected in the Global Link Manager server, and the collection results are sent by to the SMTP server. If multiple alerts with the same message ID are reported during a specified collection time, only the last alert is sent to the SMTP server. The default collection time is 10 minutes. To change the configuration, specify the server.alert_gathering.interval property in the server.properties file on the Global Link Manager server. An anonymous address is used by default as the source address of the s that are sent from the Global Link Manager server. If you want to change this source address, specify an address for the server.alert_ .from.address property in the server.properties file for the Global Link Manager server. For details about these properties, see 9-2 Managing alerts

161 the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Tip: If the host OS is VMware, an alert is not sent when a remote management client stopped. After starting the remote management client, do not forget to update the host information. If the host OS is VMware, an alert might be received approximately 5 minutes late. When there are no more paths left for the LU, the system determines that the configuration has changed, and the alert will not be reported. The following figure uses an example to show an overview of alert management: Figure 9-1 Overview of alert management The following table lists the severities of alerts and the corresponding message IDs. Table 9-1 Severity of alerts and message IDs Alert type Severity Message ID Alerts reported from the hosts via SNMP trap #1 Critical KAIF60147-E #2 KAIF60157-E #2#3 Sent by the last path connected to a LU when an error occurs on all of the paths connected to the LU Managing alerts 9-3

162 Alert type Severity Message ID KAPL08026-E #2 Error KAIF60145-E #5 Sent for each path when the path is in an offline state KAIF60155-E #3#4 KAIF04057-E KAPL08022-E KAPL08027-E Sent for each host when a failure occurs during fault monitoring polling between a remote management client and a host. Sent for each path when a path error occurs Sent for each path when an intermittent path error occurs Information KAIF60102-I Sent for each DMP or HP-UX multipath (for each host) when the alert settings for hosts are changed KAPL04058-I KAIF60146-I KAIF60156-I Sent for each host when fault monitoring polling is restored. Sent for each path when a path is recovered KAPL08032-I KAPL04042-I Sent for each HDLM (for each host) when the alert settings for hosts are changed Alerts reported if path errors are detected when host information is updated Critical KAIF20163-E #2 Sent for each host when an error occurs on all paths for an LU KAIF20105-E For HDLM or HP-UX multipath: Sent for each CHA when the loss of CHA is detected For DMP Windows: Sent for each Target when the loss of Target is detected KAIF20106-E For HDLM or HP-UX multipath: Sent for each HBA WWN when the loss of HBA WWN is detected For DMP Windows: 9-4 Managing alerts

163 Alert type Severity Message ID Sent for each Port / Channel when the loss of Port / Channel is detected Error KAIF20164-E Sent for each host when a path error occurs KAIF20104-E Sent for each path when a lost path is detected #1 #2 #3 #4 If you are using HDLM for the hosts, a host reports the alerts with the message IDs shown in the table regardless of the filtering level specified in the error log level in the HDLM environment settings. The message ID shows that the severity of this message is "Error". However, the icon displayed in the Dashboard menu and the icon for Severity in the Alerts subwindow show that the severity of this message is "Critical". In case of DMP host, this alert might not be notified. If HP-UX multipath is being used, this message might be sent even after a path is recovered. If HP-UX multipath is being used, this message is not sent when a user performs online or offline operations. The values specified for receiving alerts and for the maximum number of alerts to retain are specified in the Global Link Manager server server.properties file. To transfer alerts, you must specify a transfer destination server. For details about the server.properties file and how to transfer alerts, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Explorer menu item for managing alerts The following table shows the Explorer menu item used for managing alerts and which Global Link Manager management permissions are required for operating these items. Table 9-2 Explorer menu item for managing alerts Explorer menu Permissions Menu command Admin Modify View Alerts Yes Yes Yes Managing alerts 9-5

164 Functions for managing alerts The following table shows the functions for managing alerts and which Global Link Manager management permissions are required for using these functions. Table 9-3 List of functions for managing alerts Functions Permissions Admin Modify # View # Viewing a list of alerts Yes Yes Yes Viewing alert filtering Yes Yes Yes Marking alerts as read Yes Yes No Marking alerts as unread Yes Yes No Deleting alerts Yes Yes No Deleting all alerts Yes No No Configuring the Lost Path Check option Yes No No Configuring that report alerts Yes No No # A user with the Modify or View permission can use this function only for alerts reported by hosts within resource groups associated with that user. Related topics Configuring alerts for a host on page 5-32 Refreshing host information on page 5-15 Viewing a list of alerts on page 9-6 Viewing alert filtering on page 9-7 Marking alerts as read on page 9-9 Marking alerts as unread on page 9-10 Deleting alerts on page 9-10 Configuring to report alerts on page 9-12 Viewing a list of alerts You can view a list of alert information that has been reported by a host. When there are alerts that have not been confirmed yet, you can view the alert list and check the error information. Tip: If you delete a managed host, all alerts reported from the host are deleted. Therefore, before you delete a host, be sure to check all alerts that are reported. 9-6 Managing alerts

165 Changing the host name of a management target host or using a different host name to start a host in a multi-boot environment also changes the host name that is displayed for alerts, even for alerts that were reported before the change. If you only want to change the host name but keep the IP address the same, you should check for unconfirmed alerts before you make the change. When HP-UX multipath is being used, if many errors or error recoveries occur at the same time on a path connected to a managed host, Global Link Manager might not be able to display all the alerts about the path errors or recoveries. To check the most recent path status, refresh host information. To view a list of alerts: 1. In the Explorer menu, click Alerts. The Alerts subwindow appears with a list of alert information. Criticallevel and unread alerts are highlighted. To view information for the host and storage system from which the error originated, click the host-name or Storage-system-Name link associated with the alert. For details about actions to take for reported errors, check the message ID of the alert (see the multipath management software documentation). Related topics Viewing alert filtering on page 9-7 Marking alerts as read on page 9-9 Marking alerts as unread on page 9-10 Deleting alerts on page 9-10 Alerts subwindow on page A-197 Viewing alert filtering When there is a large volume of alert information or when you are browsing through alert information, it might be helpful to specify that only certain information is to be displayed. The following table lists the display conditions that can be specified in order to filter the alerts. You can use the AND operation to combine items. Table 9-4 Viewing alert filtering Multipath management software Item HDLM HP-UX multipa th DMP (Windows) Severity Equal or not equal to the severity selected from a dropdown list. Yes Yes Yes Managing alerts 9-7

166 Multipath management software Item HDLM HP-UX multipa th DMP (Windows) Read Date LDEV ID LDEV Label LUN Storage system Name CHA Physical LDEV ID Physical Storage system Name Physical CHA Target Multipath LU Disk Host Name HBA HBA WWN Port / Channel Category Equal or not equal to a status selected from the drop-down list. Relationship (which is earlier or later) between the time when an alert occurred and a specified date (in yyyy-mm-dd format). Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Include or do not include a specified character string. Equal or not equal to the category selected from a dropdown list. Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes No No No Yes Yes Yes Yes Yes Yes No Yes No No Yes No No Yes No No No No Yes Yes Yes No No No Yes Yes Yes Yes Yes Yes No Yes Yes No No No Yes Yes Yes Yes 9-8 Managing alerts

167 Multipath management software Item HDLM HP-UX multipa th DMP (Windows) Component Message ID Equal or not equal to the component type selected from a drop-down list. Include or do not include a specified character string. Include or do not include a specified character string. Yes Yes Yes Yes Yes Yes Yes Yes Yes To filter alerts: 1. In the Explorer menu, choose Alerts. The Alerts subwindow appears. 2. Click the Filter button. The Filter - Alerts dialog box appears. 3. Specify conditions and execute filtering. Alert information filtered according to the specified conditions is displayed in the Alerts subwindow. To clear filtering, click the Filter Off button. Filtering is also cleared when you mark alerts as read, when you delete alerts, and when you click an Explorer menu item to move to another subwindow. Related topics Viewing a list of alerts on page 9-6 Marking alerts as read on page 9-9 Marking alerts as unread on page 9-10 Deleting alerts on page 9-10 Alerts subwindow on page A-197 Filter - Alerts dialog box on page A-207 Marking alerts as read After you have checked an alert, you can apply a mark to it. This allows you to manage whether or not alerts have been checked. When you mark an alert as read, the number of unconfirmed alerts on the Dashboard menu is refreshed. Alert read and unread status is common to all Global Link Manager users. If one user marks an alert as read, all users see that alert as read. To mark alerts as read: 1. In the Explorer menu, click Alerts. Managing alerts 9-9

168 The Alerts subwindow appears. 2. Select the check boxes of the alerts to be marked as read, and then click the Read button. The alerts change to the read status. Related topics Viewing a list of alerts on page 9-6 Viewing alert filtering on page 9-7 Marking alerts as unread on page 9-10 Deleting alerts on page 9-10 Alerts subwindow on page A-197 Marking alerts as unread You can mark read alerts as unread. Alert read and unread status is common to all Global Link Manager users. If one user marks an alert as unread, all users see that alert as unread. To mark alerts as unread: 1. In the Explorer menu, click Alerts. The Alerts subwindow appears. 2. Select the check boxes of the alerts to be marked as unread, and then click the Unread button. The alerts change to the unread status. Related topics Viewing a list of alerts on page 9-6 Viewing alert filtering on page 9-7 Marking alerts as read on page 9-9 Deleting alerts on page 9-10 Alerts subwindow on page A-197 Deleting alerts Deleting unnecessary alerts makes it easy to manage an alerts list. If the maximum number of alerts configured for a Global Link Manager server is exceeded, the oldest alerts are automatically deleted. To delete alerts: 1. In the Explorer menu, click Alerts. The Alerts subwindow appears. 2. Select the check boxes of the alerts to be deleted, and then click the Delete Alerts button Managing alerts

169 The Delete Alerts dialog box appears. 3. Make sure that the selected alerts are the ones to be deleted, and then perform the deletion. 4. Check the Alerts subwindow to make sure that the alerts have been deleted. Related topics Deleting all alerts on page 9-11 Viewing a list of alerts on page 9-6 Viewing alert filtering on page 9-7 Marking alerts as read on page 9-9 Marking alerts as unread on page 9-10 Alerts subwindow on page A-197 Delete Alerts dialog box on page A-204 Deleting all alerts You can delete all of a particular piece of multipath management software's alerts at the same time. To delete all alerts: 1. In the Explorer menu, click Alerts. The Alerts subwindow appears. Select the tab that corresponds to the target multipath management software as necessary. 2. Click the Delete All Alerts button. The Delete Alerts dialog box appears. 3. Make sure that deleting all alerts poses no problems, and then perform the deletion. Check the Alerts subwindow to make sure that the alerts have been deleted. Related topics Deleting alerts on page 9-10 Viewing a list of alerts on page 9-6 Viewing alert filtering on page 9-7 Marking alerts as read on page 9-9 Marking alerts as unread on page 9-10 Alerts subwindow on page A-197 Delete Alerts dialog box on page A-204 Alert transfer settings You can set the conditions used for transferring alerts. Managing alerts 9-11

170 To set alerts to be transferred: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Alert Transfer button. The Configure Alert Transfer dialog box appears. 3. Specify each item, and then click the OK button. Related topics Alerts subwindow on page A-197 Configure Alert Transfer dialog box on page A-209 Configuring the lost path check option You can enable or disable the Lost Path Check option. To configure the Lost Path Check option: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Lost Path Check button. The Lost Path Check configuration dialog box appears. 3. Select the On check box or the Off check box, and then click the OK button. Related topics Alerts subwindow on page A-197 Configure Lost Path Check dialog box on page A-210 Configuring to report alerts With Global Link Manager, you can use to send alerts reported by the host. addresses are configured for each resource group. If an alert is reported by a host that is registered in a resource group, an is sent to the address configured for that resource group. You can also configure whether to send an based on the severity level (alert type) of an alert. You can also send combinations of multiple alert types. The following table lists the functions for configuring to report alerts, and lists which Global Link Manager management permissions are required for operating these functions Managing alerts

171 Table 9-5 List of functions for configuring to report alerts Functions Permissions Admin Modify View Displaying a list of addresses Yes No No Adding address Yes No No Removing address Yes No No Configuring address Yes No No Configuring SMTP server Yes No No Displaying resource group information for address Yes No No Adding resource group to address Yes No No Removing resource group from address Yes No No Configuring alert types to send Yes No No Related topics Adding hosts to a resource group on page 6-8 Displaying a list of addresses To display the list of addresses for reporting alerts: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. In this dialog box, the addresses are displayed in a list. Related topics Adding an address on page 9-13 Removing addresses on page 9-14 Configuring an address on page 9-15 Configuring the SMTP server on page 9-15 Displaying resource group information for addresses on page 9-16 Alerts subwindow on page A-197 Notification dialog box on page A-211 Adding an address To add an address for reporting alerts: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. Managing alerts 9-13

172 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the Add button. The Add Address dialog box appears. 4. Enter the address. Check that the information for the added address appears in the E- mail Notification dialog box. If you want to add a resource group to the address, proceed to the next step. 5. To add a resource group to an address that has been added, click the Add Resource Groups button in the Add Address dialog box (result). The Add Resource Groups dialog box appears. 6. Select the alert types to be sent, select the check boxes in the Resource Group List of the resource groups to add to the address, and then add those resource groups. Check that the address and the information for the resource group added to the address are displayed in the Notification dialog box and the Modify Resource Group dialog box. Related topics Removing addresses on page 9-14 Configuring an address on page 9-15 Alerts subwindow on page A-197 Notification dialog box on page A-211 Add Address dialog box on page A-212 Add Resource Groups dialog box on page A-214 Modify Resource Group dialog box on page A-213 Removing addresses To remove one or more addresses registered as alert-notification destinations: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Select the check boxes for the addresses to remove from the E- mail Address List, and then click the Remove button. The Remove Addresses dialog box appears. 4. Confirm the addresses to be removed, and then remove those addresses. Confirm that the addresses have been removed in the Notification dialog box. Related topics 9-14 Managing alerts

173 Adding an address on page 9-13 Configuring an address on page 9-15 Alerts subwindow on page A-197 Notification dialog box on page A-211 Remove Addresses dialog box on page A-212 Configuring an address To configure an address for reporting alerts: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the link to the address shown in the Address List. The Modify Address dialog box appears. 4. Configure the address. Check that the information for the address has been updated in the Notification dialog box and the Modify Resource Group dialog box. Related topics Adding an address on page 9-13 Removing addresses on page 9-14 Alerts subwindow on page A-197 Notification dialog box on page A-211 Modify Address dialog box on page A-212 Modify Resource Group dialog box on page A-213 Configuring the SMTP server If a firewall is set up between the Global Link Manager server and the destination server, be sure to set the IP address and port number of the destination server for the firewall. To configure the SMTP server required for reporting alerts via 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the Configure SMTP Server button. The Configure SMTP Server dialog box appears. 4. Configure the settings for the SMTP server. 5. To send a test , click the Send Test button. Managing alerts 9-15

174 A test is sent to the address that is set in the Notification dialog box, and the window in which you can check the execution result appears. 6. If you have changed the existing SMTP server settings, restart Global Link Manager sever to apply the changes. Related topics Alerts subwindow on page A-197 Notification dialog box on page A-211 Configure SMTP Server dialog box on page A-213 Displaying resource group information for addresses To display a list of registered resource group information for addresses: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the link to the number of resource groups shown in the Address List. The Modify Resource Group dialog box appears. The registered resource groups for the addresses that you have selected are shown in the dialog box. Related topics Adding resource groups to an address on page 9-16 Removing a resource group from an address on page 9-17 Configuring alert types on page 9-18 Alerts subwindow on page A-197 Notification dialog box on page A-211 Modify Resource Group dialog box on page A-213 Adding resource groups to an address You can add one or more resource groups to addresses for reporting alerts. Multiple resource groups can be added to a single address. To add resource groups to an address: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the link to the number of resource groups shown in the Address List Managing alerts

175 The Modify Resource Group dialog box appears. 4. Click the Add Groups button. The Add Resource Groups dialog box appears. 5. Select the alert types to be sent, select the check boxes in the Resource Group List of the resource groups to add to the address, and then add those resource groups. Check that the information for the resource group added to the address appears in the Modify Resource Group dialog box. Related topics Removing a resource group from an address on page 9-17 Configuring alert types on page 9-18 Alerts subwindow on page A-197 Notification dialog box on page A-211 Modify Resource Group dialog box on page A-213 Add Resource Groups dialog box on page A-214 Removing a resource group from an address To remove a resource group from an address for reporting alerts: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the link to the number of resource groups shown in the Address List. The Modify Resource Group dialog box appears. 4. Select the check boxes for the resource groups to remove from the Resource Group List, and then click the Remove Groups button. The Remove Resource Groups dialog box appears. 5. Confirm the resource groups to be removed, and then remove those resource groups. Confirm that the resource groups have been removed in the Modify Resource Group dialog box. Related topics Adding resource groups to an address on page 9-16 Configuring alert types on page 9-18 Alerts subwindow on page A-197 Notification dialog box on page A-211 Modify Resource Group dialog box on page A-213 Remove Resource Groups dialog box on page A-214 Managing alerts 9-17

176 Configuring alert types To configure alert types to be reported by for each resource group: 1. In the Explorer menu, select Alerts. The Alerts subwindow appears. 2. Click the Configure Notification button. The Notification dialog box appears. 3. Click the link to the number of resource groups shown in the Address List. The Modify Resource Group dialog box appears. 4. From the Resource Group List, select the check boxes for the resource groups to configure, and then click the Modify Alert Type button. The Modify Alert Type dialog box appears. 5. Select the alert type to be sent, and then configure that alert type. Confirm that the alert types for the resource groups have been updated in the Modify Resource Group dialog box. Related topics Adding resource groups to an address on page 9-16 Removing a resource group from an address on page 9-17 Alerts subwindow on page A-197 Notification dialog box on page A-211 Modify Resource Group dialog box on page A-213 Modify Alert Type dialog box on page A Managing alerts

177 10 Managing licenses This chapter describes the functions for managing licenses and describes how to use these functions. Overview Viewing license information Editing a license Managing licenses 10-1

178 Overview In Global Link Manager, licenses that can cover the number of managed hosts must be registered. If the licenses have not been registered, or if a license has expired, users cannot log in to the Global Link Manager. The following license keys are available. Table 10-1 License key types License type Permanent license key Temporary license key Emergency license key A license key that allows for permanent use of the product A license key that is valid for a limited time, such as the user evaluation period for a product. The license period is 120 days A temporary license key for use while waiting for a permanent license key to be issued. The license period is 30 days Explorer menu items for managing licenses The following table shows the Explorer menu items used for managing licenses and which permissions are required for using these items. Table 10-2 Explorer menu items for managing licenses Explorer menu Permissions Submenu Command Admin (for user management) Admin, Modify, View (for Global Link Manager management) Settings License Info Yes Yes Functions for managing licenses The following table shows the functions for managing licenses and which permissions are required for using these functions. Table 10-3 List of functions for managing licenses Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Viewing license information Yes Yes 10-2 Managing licenses

179 Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Editing a license Yes Yes Related topics Viewing license information on page 10-3 Editing a license on page 10-3 Viewing license information You can view the following information for configured licenses. Global Link Manager version information License key type Information on the number of license keys registered and the number of hosts (for permanent license keys) Number of days remaining until license expiration (for temporary license keys and emergency license keys) To view license information: 1. In the Explorer menu, click Settings and choose License Info. The License Info subwindow appears with information about the configured licenses. Related topics Editing a license on page 10-3 License Info subwindow on page A-218 Editing a license You can edit information for a configured license. When a temporary license key or an emergency license key is used, configure a new license before the existing license expires. To edit a license: 1. In the Explorer menu, click Settings and choose License Info. The License Info subwindow appears. 2. Click the Edit License button. The Edit License dialog box appears. Managing licenses 10-3

180 3. Edit the license information and refresh. 4. Check the License Info subwindow to make sure that the license information has been refreshed. Related topics Viewing license information on page 10-3 License Info subwindow on page A-218 License, About, and Edit License dialog boxes on page A Managing licenses

181 11 Setting security This chapter describes the functions for setting security options during login and explains how to use these functions. Overview Viewing conditions for passwords Changing conditions for passwords Viewing settings for automatic account lock Changing settings for automatic account lock Viewing a preview of the warning banner Editing a warning banner Deleting a warning banner Setting security 11-1

182 Overview You can set security options that enhance security during login. In Global Link Manager, you can use the login security functions to perform the following: Set conditions for the structure of the passwords that are specified, in order to make it more difficult for third parties to guess user passwords. Lock a user account when an invalid password is entered more than a specified number of times in succession. Display a desired (warning banner) in the user login window during login as a security measure. You can use the configuration file or Global Link Manager server commands to set security options. If the Global Link Manager server is running in a cluster environment, set security options from the Global Link Manager server. For details on how to set security options in the Global Link Manager server, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. Explorer menu items for setting security The following table shows the Explorer menu item that is used to configure security settings and the permission that is required. Table 11-1 Explorer menu items for setting security Explorer menu Permissions Submenu Command Admin (for user management) Admin, Modify, View (for Global Link Manager management) Administration Security Yes No Functions for setting security The following table shows the functions that can be used to configure security settings and the permissions that are required Setting security

183 Table 11-2 List of functions for setting security Permissions Functions Admin (for user management) Admin, Modify, View (for Global Link Manager management) Viewing conditions for passwords Yes No Changing conditions for passwords Yes No Viewing settings for automatic account lock Yes No Changing settings for automatic account lock Yes No Viewing a preview of warning banner Yes No Editing warning banner Yes No Deleting warning banner Yes No Related topics Viewing conditions for passwords on page 11-3 Changing conditions for passwords on page 11-4 Viewing settings for automatic account lock on page 11-4 Changing settings for automatic account lock on page 11-5 Viewing a preview of the warning banner on page 11-6 Editing a warning banner on page 11-7 Deleting a warning banner on page 11-7 Viewing conditions for passwords You can view the following password conditions: The minimum length for a password (minimum number of characters) The number of characters that must be used in a password (upper-case, lower-case, numerics, and symbols) Whether the password can be the same as the user ID To view password conditions: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Password under Security. The Password subwindow appears. Password conditions are displayed in the Password subwindow. Related topics Setting security 11-3

184 Changing conditions for passwords on page 11-4 Security subwindow on page A-193 Password subwindow on page A-193 Changing conditions for passwords To enhance security, you can set password conditions to make it more difficult for third parties to guess user passwords. Password conditions can include a minimum number of characters and a required combination of character types. If the Global Link Manager server is running in a cluster environment, set security options from the Global Link Manager server. For details about how to configure settings on a Global Link Manager server, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. The specified password conditions are applied when a new user is added and when a password is changed. Because newly set conditions are not applied to existing user passwords, existing users can continue to log into Global Link Manager using their existing passwords, even if those passwords do not conform to the newly established conditions. To change password conditions: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Password under Security. The Password subwindow appears. 3. Click the Edit Settings button. The Password dialog box appears. 4. Change the password conditions and then apply the changes. Use the Password subwindow to check that the conditions have been updated. Related topics Viewing conditions for passwords on page 11-3 Security subwindow on page A-193 Password subwindow on page A-193 Password dialog box on page A-194 Viewing settings for automatic account lock You can display whether automatic account locking is enabled. If automatic locking is enabled, the system also displays the number of unsuccessful login attempts that will trigger account locking. To view the automatic account lock settings: 1. In the Explorer menu, choose Administration and then Security Setting security

185 The Security subwindow appears. 2. Expand the object tree and choose Account Lock under Security. The Account Lock subwindow appears. The automatic account lock settings are displayed in this subwindow. Related topics Changing settings for automatic account lock on page 11-5 Security subwindow on page A-193 Account Lock subwindow on page A-195 Changing settings for automatic account lock To prevent attempts by unauthorized individuals to log in using the trial-anderror method of finding the valid password, you can set the system to automatically lock a user account when an invalid password is entered a specified number of times in succession. If the Global Link Manager server is running in a cluster environment, set security options from the Global Link Manager server. For details about how to configure settings on a Global Link Manager server, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. You can specify whether to use the automatic account lock function. When this function is to be used, you must also set the number of unsuccessful login attempts that will cause an account to be locked. Note that even when the automatic account lock function is set, the built-in account (user ID: System) can never be locked. If you want to lock an account that is managed by the external authentication server, you have to manually lock it. If other Hitachi Command Suite products are being used in addition to Global Link Manager, successive unsuccessful attempts to log in to any of the Hitachi Command Suite products are counted in determining the count for applying automatic account locking for that user account. The count of successive login failures associated with a specific user account is cleared when login to that account is successful. When you change the setting for the number of login failures, the new setting does not apply retroactively to users who have already exceeded the new value or to user accounts that are already locked. For example, if you change the number of login failures from five to two, the account of a user who had already failed to log in, say, three times in a row would not be locked immediately. However, if the next attempt (the fourth attempt) to log in to Global Link Manager under that account is also unsuccessful, the account will be locked. Any time an attempt is made to log in to Global Link Manager using an invalid password for a user account that is already logged into Global Link Manager, that user account is locked automatically. If this happens, the user can continue to perform operations until logout, but will be unable to start Tuning Manager from the Dashboard menu. Setting security 11-5

186 After an account is locked, the user cannot log in to Global Link Manager until the account is unlocked. When an attempt is made to log in from a locked-out account, the standard authentication error is displayed but the user is not notified that the account is locked. To determine whether a user account is locked, check the Status field in the list of users. To change the automatic account lock settings: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Account Lock under Security. The Account Lock subwindow appears. 3. Click the Edit Settings button. The Account Lock dialog box appears. 4. Change the automatic account lock settings and then apply the changes. Use the Account Lock subwindow to check that the settings have been updated. Related topics Locking user accounts on page 3-10 Unlocking user accounts on page 3-11 Viewing settings for automatic account lock on page 11-4 Security subwindow on page A-193 Account Lock subwindow on page A-195 Account Lock dialog box on page A-195 Viewing a preview of the warning banner You can preview the warning banner that can be edited in the Global Link Manager GUI. To preview the warning banner: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Warning Banner under Security. The Warning Banner subwindow appears, in which the current warning banner is displayed. Related topics Editing a warning banner on page 11-7 Deleting a warning banner on page 11-7 Security subwindow on page A-193 Warning Banner subwindow on page A Setting security

187 Editing a warning banner As a security measure during login, you can display a message in the user login window. You can edit the displayed message in HTML format. You can also set HTML tags by following the guides provided in the Edit Message dialog box. However, if any of the following applies, you must use Global Link Manager server commands to set up the warning banner: You want to specify a message for a different locale. You want to use HTML tags that are not supported by the Global Link Manager GUI. The Global Link Manager server is being used in a cluster environment. For details about how to set up a warning banner on the Global Link Manager server, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To edit the warning banner: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Warning Banner under Security. The Warning Banner subwindow appears. 3. Click the Edit Message button. The Edit Message dialog box appears. 4. Edit the message to be set up as the warning banner and then apply the changes. Clicking the Preview button displays a preview in HTML. Make sure that the message is displayed correctly, and then apply it. Related topics Viewing a preview of the warning banner on page 11-6 Deleting a warning banner on page 11-7 Security subwindow on page A-193 Warning Banner subwindow on page A-196 Edit Message dialog box on page A-196 Deleting a warning banner You can delete the warning banner that is already set up. To delete the warning banner: 1. In the Explorer menu, choose Administration and then Security. The Security subwindow appears. 2. Expand the object tree and choose Warning Banner under Security. The Warning Banner subwindow appears. Setting security 11-7

188 3. Click the Edit Message button. The Edit Message dialog box appears. 4. Click the Delete button to clear the message, and then apply the deletion. In the Warning Banner subwindow, make sure that the message has been deleted. Related topics Viewing a preview of the warning banner on page 11-6 Editing a warning banner on page 11-7 Security subwindow on page A-193 Warning Banner subwindow on page A-196 Edit Message dialog box on page A Setting security

189 12 Exporting management information This chapter describes the functions for batch output of Global Link Manager management information to a CSV file and explains how to use these functions. Overview Exporting to a CSV file Exporting management information 12-1

190 Overview Information about all managed paths can be output to a CSV file, where other applications can be used to examine that information. The last update time for the following information is output: List of hosts List of paths List of alerts Function for exporting information to a CSV file The following table shows the function used for exporting information to a CSV file and which Global Link Manager management permissions are required for performing this operation. Table 12-1 List of functions for exporting information to a CSV file Function Permissions Admin Modify # View # Exporting management information to a CSV file Yes Yes Yes # A user with the Modify or View permission can use this function only for objects that belong to hosts within resource groups associated with that user. Related topics Exporting to a CSV file on page 12-2 Exporting to a CSV file You can use one operation to output, to a CSV file, a list of hosts, paths, and alerts managed by Global Link Manager. The number of items that can be output to a CSV file has increased with each version of Global Link Manager. By specifying an older version of Global Link Manager, you can acquire only the items that were output by that version of Global Link Manager version, allowing you to continue using existing applications without having to make any changes, even after you have upgraded Global Link Manager. To output a CSV file in a format of an earlier Global Link Manager version, use the gui.export.version property of the Global Link Manager server server.properties file. For details about the gui.export.version property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. The following table describes the items that are output for CSV files Exporting management information

191 Table 12-2 Management information items output to CSV files Output item [ExportCSV] [Hosts] [Paths] [Alerts] [END] [Error] The creation time of the CSV file is output. The list of hosts displayed in the Hosts subwindow is output. The list of paths displayed in the Show Paths dialog box is output. All of the paths managed by the user are included in the list. The list of alerts displayed in the Alerts subwindow is output. This is output when the CSV output ends normally. This is output with an error message if the CSV output ends abnormally. The following table describes the items output to CSV files and the Global Link Manager version or versions for which they were output. Table 12-3 CSV file format for management information "[ExportCSV]" "Time" "[Hosts]" Output item "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","OS","HDLM","IP Address" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","IP Address","OS","Multipath Software","Version","Enabled","Disabled" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","IP Address","OS","Multipath Software","Version","Enabled, Healthy","Disabled, Unhealthy" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","Online(S)" #1,"IP Address","OS","Multipath Software","Version","Enabled, Healthy","Disabled, Unhealthy" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","Online(S)" #1,"IP Address","Agent Service Port","OS","Multipath Software","Version","Enabled, Healthy","Disabled, Unhealthy" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E Global Link Manager version All versions All versions All versions 5.0, 5.6, 5.7, 6.0, , Exporting management information 12-3

192 Output item )","Online(S)" #1,"Online(D)" #1,"IP Address","Agent Service Port","OS","Multipath Software","Version","Enabled, Healthy","Disabled, Unhealthy" "Name","Last Update Time","Online","Offline(C)","Offline(E)","Online(E )","Online(S)" #2,"Online(D)" #2,"IP Address","Agent Service Port","OS","Multipath Software","Version","Enabled, Healthy","Disabled, Unhealthy" "[Paths]" "Status","Intermittent Error","Host Name","HDev Name","HBA Port","Path ID","Path Name","Path Type","Subsystem Name","Ldev","SLPR","CHA Port","CLPR" "Status","Intermittent Error","Host Name","Multipath LU","HBA Port","Path ID","Path Name","Path Type","Subsystem Name","Ldev","SLPR","CHA Port","CLPR" "Status","LDEV","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","Path Type","I/O Count","I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error" "Status","LDEV","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","Path Type","I/O Count","I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","HBA Port WWN" "Status","LDEV","LDEV Label","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","HBA Port WWN","Path Type","I/O Count" #3,"I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","LUN Serial Number","Operations - Read","Operations - Write","I/O Size - Read","I/O Size - Unit","I/O Size - Write","I/O Size - Unit","Avg Time(ms) - Read","Avg Time(ms) - Write","Array Port","Metadevice","HBA Controller" "Status","LDEV","LDEV Label","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","HBA Port WWN","Path Type","I/O Count" #3,"I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","LUN Serial Number","Operations - Read","Operations - Write","I/O Size - Read","I/O Size - Unit","I/O Size - Write","I/O Size - Unit","Avg Time(ms) - Read","Avg Time(ms) - Write","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel","Bytes- Read","Bytes- Write","Primary" 8.0 Global Link Manager version All versions , Exporting management information

193 Output item "Status","LDEV","Org-LDEV ID" #4,"Physical LDEV ID" #5,"LDEV Label","Subsystem Name","Org-Storage system Name" #4,"Physical Storage system Name" #5,"CHA Port","Physical CHA Port" #5,"Multipath LU","Host Name","HBA Port","HBA Port WWN","Path Type","I/O Count" #3,"I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","LUN Serial Number","Operations - Read","Operations - Write","I/O Size - Read","I/O Size - Unit","I/O Size - Write","I/O Size - Unit","Avg Time(ms) - Read","Avg Time(ms) - Write","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel","Bytes- Read","Bytes- Write","Primary" "Status","LDEV","Org-LDEV ID" #4,"Physical LDEV ID" #5,"LDEV Label","Subsystem Name","Org-Storage system Name" #4,"Physical Storage system Name" #5,"CHA Port","Physical CHA Port" #5,"Multipath LU","Disk Number","Host Name","HBA Port","HBA Port WWN","Path Type","I/O Count" #3,"I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","LUN Serial Number","Operations - Read","Operations - Write","I/O Size - Read","I/O Size - Unit","I/O Size - Write","I/O Size - Unit","Avg Time(ms) - Read","Avg Time(ms) - Write","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel","Bytes- Read","Bytes- Write","Primary" "Status","LDEV","LDEV Label","Storage system Name","Physical LDEV ID" #6,"Physical Storage system Name" #6,"Physical CHA Port" #7,"CHA Port","Multipath LU","Disk Number","Host Name","HBA Port","HBA Port WWN","Path Type","I/O Count" #3,"I/O Errors","SLPR","CLPR","Path ID","Path Name","Intermittent Error","LUN Serial Number","Operations - Read","Operations - Write","I/O Size - Read","I/O Size - Unit","I/O Size - Write","I/O Size - Unit","Avg Time(ms) - Read","Avg Time(ms) - Write","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel","Bytes- Read","Bytes- Write","Primary" "[Alerts]" "Severity","Mark","Date","Host Name","Category","Component","Message ID","" Global Link Manager version 7.2, , All versions 5.0 Exporting management information 12-5

194 Output item "Severity","Mark","Time","Host Name","Category","Component","Message ID","" "Severity","Read","Time","LDEV","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","Category","Component","Message ID","" "Severity","Read","Time","LDEV","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","Category","Component","Message ID","","HBA Port WWN" "Severity","Read","Time","LDEV","LDEV Label","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","HBA Port WWN","Category","Component","Message ID","","LUN Serial Number","Array Port","Metadevice","HBA Controller" "Severity","Read","Time","LDEV","LDEV Label","Subsystem Name","CHA Port","Multipath LU","Host Name","HBA Port","HBA Port WWN","Category","Component","Message ID","","LUN Serial Number","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel" "Severity","Read","Time","LDEV","Org-LDEV ID" #4,"Physical LDEV ID" #5,"LDEV Label","Subsystem Name","Org-Storage system Name" #4,"Physical Storage system Name" #5,"CHA Port","Physical CHA Port" #5,"Multipath LU","Host Name","HBA Port","HBA Port WWN","Category","Component","Message ID","","LUN Serial Number","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel" "Severity","Read","Time","LDEV","LDEV Label","Storage system Name","Physical LDEV ID" #6,"Physical Storage system Name" #6 "Physical CHA Port" #7,"CHA Port","Multipath LU","Host Name","HBA Port","HBA Port WWN","Category","Component","Message ID","","LUN Serial Number","Array Port","Metadevice","HBA Controller","LUN","Target","Disk","Port / Channel" "[END]" "[Error]" 5.6 Global Link Manager version 5.7, , 7.3, 7.4.1, All versions All versions (This is output when the CSV output ends abnormally.) Note: 12-6 Exporting management information

195 #1 #2 #3 #4 #5 #6 If an error occurs while the CSV file is being output, the output processing might be stopped, and the file might not be output in a proper format. If the gui.ham.view properties in the server.properties file for the Global Link Manager server are set to true, and the version of the CSV file format is earlier than 7.2, paths with the Online(S) status and paths with the Online(D) status are displayed as paths with the Offline(E) status. If the gui.ham.view properties in the server.properties file for the Global Link Manager server are set to true, and the version of the CSV file format is 7.2 or later and earlier than 7.6, paths with the Online(D) status are displayed as paths with the Offline(S) status. This is displayed if the gui.ham.view properties in the server.properties file for the Global Link Manager server are set to true. If the gui.ham.view properties are set to false, the paths are displayed as paths with the Offline(E) status. For details about the gui.ham.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. These items are output if the gui.physical.view and gui.ham.view properties in the server.properties file of the Global Link Manager server are true. For details about the gui.physical.view property and the gui.ham.view property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. When DMP is used, the number of read and write requests, which are issued from the operating system to the storage system, are displayed in the Global Link Manager GUI, but the total number of requests is only displayed when the information is output to a CSV file. This is displayed if the gui.ham.view properties in the server.properties file for the Global Link Manager server are set to true. For details about the gui.ham.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. This is displayed if the gui.id_take_over.view properties in the server.properties file for the Global Link Manager server are set to true. For details about the gui.id_take_over.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. This is displayed if the gui.physical.view properties in the server.properties file for the Global Link Manager server are set to Exporting management information 12-7

196 #7 true. For details about the gui.physical.view properties, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. These items are output if the gui.physical.view and gui.id_take_over.view properties in the server.properties file of the Global Link Manager server are true. For details about the gui.physical.view property and the gui.id_take_over.view property, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide. To export path information to a CSV file: To use the GUI In the global tasks bar area, click File and then choose Export to specify the output destination. The data is exported to the CSV file of the specified destination. The default file name is Export.csv. For details on file formats, see Table 12-3 CSV file format for management information on page Make sure that the CSV output processing has finished successfully, and [END] has been output at the end of the file. Tip: If an error occurred during the output processing of the CSV file, an error message is not displayed in the Export dialog box. At the end of the CSV file, [Error] and an error message are output. To use the CLI Execute the following command to output a CSV file. This command can be executed by users who have Admin permissions: Global-Link-Manager-installation-destination-folder\bin \hglamexportcsv { -dir CSV-file-output-destination-folder [-v version-number] [-f CSV-file-name] [-o] [-h] } The description of each parameter is as follows: -dir CSV-file-output-destination-folder Use an absolute path to specify the output destination of the CSV file. If the specified folder name contains spaces, enclose the entire path in double quotation marks ("). -v version-number Specify the version number of the CSV file output format. If this parameter is not specified, a CSV file is output in the format with the version number specified by gui.export.version in server.properties. -f CSV-file-name Specify the name of the CSV file to be output. If the specified file name contains spaces, enclose the entire name in double quotation marks ("). However, you cannot specify a space at the end of the name. Also, the following symbols cannot be used in the file name: 12-8 Exporting management information

197 \, /, :, *,?, ", <, >,, %, =, ^,, (comma), ;, & If this parameter is not specified, a CSV file is output with the default file name Export.csv. -o Specify this parameter to overwrite a file with the same file name as that to be output to the file output destination. If this parameter is not specified, an error message is output and processing stops without overwriting the file with the same name. -h Displays the syntax of the hglamexportcsv command. For details about CSV file formats, see Table 12-3 CSV file format for management information on page Exporting management information 12-9

198 12-10 Exporting management information

199 13 Generating reports on path availability This chapter describes the function used to output, to a CSV file, reports on path availability and explains how to use this function. Overview Creating a report Generating reports on path availability 13-1

200 Overview You can output, to a CSV file, information related to the operating record of paths that belong to a host. For hosts on which HDLM version 5.9 or later has been installed, you can output data for a maximum of 90 days prior to the date on which the report is created. In Global Link Manager, the functions used to output path availability reports can be used to do the following: Acquire details about path errors, such as when path errors occurred, whether path errors have been recovered, and the types of problems that occurred while the administrator was unavailable. Use an application of your choosing to process and use the output CSV file. Check outside the guaranteed range when the normal number of paths and path availability per LU are defined in a service level agreement (SLA). The following table lists the reports that can be output. Table 13-1 Report types for path availability information Report type Path Availability Report Path Status Log Reports on the availability of each path over a specified period of time. The values that are output are calculated from path status log information. If the host OS is VMware, the calculation of path availability might be inaccurate by approximately five minutes. Logs events over a specified period of time such as those corresponding to path status changes (error occurrence and recovery) and the starting and stopping of the HDLM manager. If the host OS is VMware, the time that is recorded in the log might have a margin of error of approximately five minutes. The path availability information that is used to create reports is acquired from the HDLM of each host during host information updating and is saved on the Global Link Manager server as a path status log (the log file that is the basis of the information that is output in reports covering specified periods of time). By default, the path availability information (path status log) is not acquired. To create a report, you must specify acquisition of this information beforehand in the server.pathreport.enable property of the Global Link Manager server server.properties file. For details about enabling and disabling acquisition of information (server.pathreport.enable property), and about how to specify the location and size of the file to be saved, see the Hitachi Command Suite Global Link Manager Installation and Configuration Guide Generating reports on path availability

201 Tip: New settings are not applied immediately after you change the enable or disable setting for acquisition of the availability information on the Global Link Manager server. In this case, you must apply (update) the host information to start or stop acquiring path availability information. Regardless of whether information acquisition is enabled or disabled (using the server.pathreport.enable property), a report containing previously acquired information can be output. If no path availability information exists for the specified report period, however, the report is output with no information. If the name of the host that is acquiring path availability information is changed, the host name used when an event occurred will be output to the path status log. However, the new host name will be output to the path availability report (that is, information before and after the name change will be merged and output using the new host name). If you delete a host that is acquiring path availability information, the path availability information will also be deleted. When you want to change the IP address or port number of a host, you need to delete the host, and then register the host again. Therefore, in this case, path information before the change is also deleted. The following figure uses an example to show an overview of generating reports on path availability information: Figure 13-1 Overview of generating reports on path availability information Generating reports on path availability 13-3

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