IBM XIV Gen3 Storage System Release Notes for version 11.3.1 Second edition
Contents Release Notes............ 1 What's new in IBM XIV software version 11.3.1... 1 Availability of code load.......... 1 Availability of Host Attachment Kits (HAK).... 1 Miscellaneous.............. 1 Limitations............... 2 Fixed issues.............. 2 SYS-262211.............. 2 SYS-261224.............. 3 SYS-263022.............. 3 SYS-263289.............. 3 SYS-263345.............. 3 SYS-261839.............. 3 SYS-261567.............. 4 SYS-261878.............. 4 SYS-262711.............. 4 SYS-263178.............. 4 SYS-263452.............. 4 Known issues.............. 5 SYS-263438.............. 5 Copyrights............... 5 Definitions of problem severity........ 5 Contacting IBM Support.......... 5 Documentation format........... 6 Notices and trademarks.......... 6 Copyright IBM Corp. 2013 iii
iv IBM XIV Gen3 Storage System: Release Notes for version 11.3.1 Second edition
Release Notes These release notes are for IBM XIV Gen3 Storage System Version 11.3.1. Release date 17 December 2013 What's new in IBM XIV software version 11.3.1 Availability of code load IBM XIV software version 11.3.1 for IBM XIV Storage System Gen3 is a maintenance release, delivering bug fixes as later described in this document. Version 11.3.1 is only available for Gen3 hardware. This version supports hot upgrade from: v 11.3.0.a v 11.2.0.c v 11.2.0.b v 11.1.1 v 11.1.0.b The upgrade requires Technician Assistant Tool (TA) version 4.8 or above. Refer to Preparing for code load on the Information Center. This topic details the steps required from the customer in order to prepare for the code load. http://publib.boulder.ibm.com/infocenter/ibmxiv/r2/topic/com.ibm.help.xiv.doc/ xiv_po_11_1_02.html Availability of Host Attachment Kits (HAK) IBM XIV Host Attachment Kit The latest IBM XIV Host Attachment Kit (HAK) version can be downloaded from the IBM Fix Central website: http://www.ibm.com/ support/fixcentral IBM Storage Host Software Solutions Information Center For detailed usage information, refer to the IBM Storage Host Software Solutions Information Center: http://publib.boulder.ibm.com/infocenter/ strhosts/ic. Miscellaneous v The total number of hosts available for use is 994. v Systems with up to 3 failed drives can be upgraded. v The vol_mapping_list command is allowed for all users with read-only permission. v Systems featuring 4 TB disk drive modules have a maximum pool size capacity of 325 TB. v The total number of mirroring-related volumes on a single system includes IBM Hyper-Scale Mobility (non-proxy), and cannot exceed 1,536. Copyright IBM Corp. 2013 1
Limitations 1. IBM Hyper-Scale Mobility applies to systems located within the same data center. 2. Using Hyper-Scale Mobility to mobilize volumes that are mapped to Unix or Linux hosts, and are backed-up using IBM Tivoli Storage FlashCopy Manager version 3.2 or earlier, is not supported. 3. IBM Hyper-Scale Mobility cannot be applied directly on a volume that belongs to a consistency group. Before such a volume can be moved using IBM Hyper-Scale Mobility, it must be removed from the consistency group. 4. IBM Hyper-Scale Mobility does not apply to volume snapshots. When the migration is changed to proxy state, all snapshots of the pertinent migrated volume are deleted automatically. 5. IBM Hyper-Scale Mobility does not migrate a volume that is in a mirroring relationships. Before a volume can be moved using IBM Hyper-Scale Mobility, its mirroring relationship must be deleted. 6. Using Hyper-Scale Mobility to mobilize volumes that are mapped to Windows Server hosts, and are backed-up using Microsoft Volume Shadow Copy Service, with IBM XIV Provider for Microsoft Windows Volume Shadow Copy Service (VSS) version 2.3.2 or earlier, is not supported. To use Hyper-Scale Mobility in this case, IBM XIV Provider for Microsoft Windows Volume Shadow Copy Service (VSS) version 2.4.0 or later must be installed. Note: IBM Tivoli Storage FlashCopy Manager for Windows is relying on Microsoft Volume Shadow Copy Service. To use Hyper-Scale Mobility with IBM Tivoli Storage FlashCopy Manager for Windows, IBM XIV Provider for Microsoft Windows Volume Shadow Copy Service (VSS) version 2.4.0 or later must be installed. 7. Using Hyper-Scale Mobility to mobilize volumes that are mapped to Windows Server hosts, and are protected by IBM Storage Enabler for Windows Failover Clustering version 1.1.0 or earlier, is not supported. To use Hyper-Scale Mobility in this case, IBM Storage Enabler for Windows Failover Clustering version 1.2.0 or later must be installed. Additional information may be available from the respective release notes of the products mentioned in the limitations: 1. For IBM Tivoli Storage FlashCopy Manager for Unix and Linux please refer to release notes of version 4.1 or later. 2. For IBM XIV Provider for Microsoft Windows Volume Shadow Copy Service release notes, please refer to: http://pic.dhe.ibm.com/infocenter/strhosts/ic/ topic/com.ibm.help.strghosts.doc/vss-homepage.html. 3. For IBM Storage Enabler for Windows Failover Clustering, release notes, please refer to: http://pic.dhe.ibm.com/infocenter/strhosts/ic/index.jsp?topic= %2Fcom.ibm.help.strghosts.doc%2Fmscs-homepage.html. Fixed issues SYS-262211 In very rare cases, during the replication of a volume that is configured as an asynchronous mirroring master, if the volume was originally migrated from another storage system in the past using XIV Data Migration, data access to the system may be lost. 2 IBM XIV Gen3 Storage System: Release Notes for version 11.3.1 Second edition
High impact - Serious 11.0.0 and up SYS-261224 When QoS is enabled, the interface node (i_node) may encounter a failure whenever the module uptime is a multiple of 497 days (497, 994, 1491, etc). If the defect occurs on multiple XIV interface modules at the same time, this could cause a loss of access. High impact 11.0.0 and up SYS-263022 A failure of an XIV module or drive during "Data Migration" may lead to a loss of access. High impact 11.3.0 and up SYS-263289 An XIV Gen3 system upgraded to code version 11.3.x or higher, using iscsi connectivity and SSD caching, may hit a memory depletion condition when maintenance tools (such as XRAY) are run on the modules. This condition may have impact on various system management functions and in rare cases could lead to loss of access. High impact 11.3.0 and up SYS-263345 Data access (FC & iscsi) to an Interface module may break if more than 350 active connections are defined to one of the module's FC ports. High impact 11.3.0 and up SYS-261839 When a system is configured to work with an LDAP server and the LDAP server is unavailable, the system Management Tools (XIV GUI, XCLI) will not be able to access (manage) the system. Moderate Release Notes 3
11.1.0.b and up SYS-261567 When using IBM Hyper-Scale Mobility, during the Proxy phase, while the host is mapped to both the source volume and the destination volume (the source volume serves as a proxy to the destination), if the user tries to delete the target using the target_delete XCLI command, the command succeeds without cleaning up the proxy volumes. Service 11.3.0 and up SYS-261878 The statistics_get XCLI command parses historical data that is stored on an XIV internal file system. When the systems is under high IO load, running statistics_get XCLI may fail with MCL_TIMEOUT_EXPIRED return code. The algorithm for searching for relevant statistics records has been improved. Under rare conditions the command may still fail, in those conditions retrying the command immediately after it fails will succeed. Service 11.1.1 and up SYS-262711 An asynchronous mirroring relation between a master that is version 11.2.0 and up and a slave whose version is lower than 11.2.0, mirroring a volume that is filled with zeros gets the sync job stuck. Service 11.1.1 and up SYS-263178 In rare cases, the statistics_get XCLI command may report only zeros. Service 11.3.0 and up SYS-263452 When changing a pool from thin provisioned to thick provisioned (or vice versa), or when a pool usage threshold (maximum number of volumes and snapshots is 12000) has been crossed, data access (FC & iscsi) of an interface module may break. 4 IBM XIV Gen3 Storage System: Release Notes for version 11.3.1 Second edition
High impact 11.2.0 and up Known issues Copyrights SYS-263438 After 4377 Hyper-Scale Mobility migrations, the maximum number of volumes in a system (12,000) will decrease by 1 volume with each new migration. Moderate 11.3.0 and up Copyright IBM Corporation 2014. US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. References in this documentation to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program or service is not intended to state or imply that only IBM's product, program or service may be used. Any functionally equivalent product, program or service that does not infringe any of IBM's intellectual property rights may be used instead of the IBM product, program or service. Evaluation and verification of operation in conjunction with other products, except those expressly designated by IBM, are the user's responsibility. Definitions of problem severity Contacting IBM Support The following definitions denote issues severity: High impact v Acute / Serious Acute - An irrecoverable error with potential loss of data. Serious - An irrecoverable error with potential loss of access to data. v HYPER - An high impact problem that is pervasive: 3 or more occurrences. Moderate A function not operational and/or performance might be degraded. Service A recoverable error (no impact) and service improvement. Improvements Changes made for the purpose of better usability and serviceability. The release is supported via: Release Notes 5
Documentation format Notices and trademarks Notices Voice calls Will come into Level 1 or Front Line Support as they do for the current product. Customers will use the appropriate support phone number for their respective countries; refer to the World Wide Directory for the support numbers by country. http://www.ibm.com/planetwide The publications for this product are in Adobe Portable Document Format (PDF) and should be compliant with accessibility standards. If you experience difficulties when you use the PDF files and want to request a web-based format or accessible PDF document for a publications, send a request by email to starpubs@us.ibm.com. In the request, be sure to include the IBM publication number and title. When you sent information to IBM, you grant IBM a nonexclusive right to use to distribute the information in any way it believes appropriate without incurring any obligation to you. INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. Trademarks Linux is a trademark of Linus Torvalds in the United States, other countries, or both. Microsoft, Windows, and Windows Server are trademarks of Microsoft Corporation in the United States, other countries, or both. Intel, Intel logo, Intel Inside, Intel Inside logo, Intel Centrino, Intel Centrino logo, Celeron, Intel Xeon, Intel SpeedStep, Itanium, and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Other company, product, or service names may be trademarks or service marks of others. THIRD-PARTY LICENSE TERMS AND CONDITIONS, NOTICES AND INFORMATION The license agreement for this product refers you to this file for details concerning terms and conditions applicable to third party software code included in this product, and for certain notices and other information IBM must provide to you under its license to certain software code. The relevant terms and conditions, notices and other information are provided or referenced below. Please note that 6 IBM XIV Gen3 Storage System: Release Notes for version 11.3.1 Second edition
any non-english version of the licenses below is unofficial and is provided to you for your convenience only. The English version of the licenses below, provided as part of the English version of this file, is the official version. Notwithstanding the terms and conditions of any other agreement you may have with IBM or any of its related or affiliated entities (collectively "IBM"), the third party software code identified below are "Excluded Components" and are subject to the following terms and conditions: v the Excluded Components are provided on an "AS IS" basis v v v IBM DISCLAIMS ANY AND ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS WITH RESPECT TO THE EXCLUDED COMPONENTS, INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF NON-INFRINGEMENT OR INTERFERENCE AND THE IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IBM will not be liable to you or indemnify you for any claims related to the Excluded Components IBM will not be liable for any direct, indirect, incidental, special, exemplary, punitive or consequential damages with respect to the Excluded Components. Release Notes 7
8 IBM XIV Gen3 Storage System: Release Notes for version 11.3.1 Second edition
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