NEC Express5800 Series. StorView Ver. 3. Operation Guide. for N F B

Transcription

1 NEC Express5800 Series StorView Ver. 3 Operation Guide for N F

2 Trademarks NEC ESMPRO is the registered trademark of NEC Corporation. Microsoft, Windows are registered trademarks or trademarks of Microsoft Corporation in the United States. and other countries. Linux is the registered trademark of Linus Torvalds. Red Hat and RPM are the registered trademarks of Red Hat, Inc. Netscape, and the logotype with N of Netscape and a steering wheel, are the registered trademarks of Netscape Communications Corporation in the United States and other countries. nstor and StorView are registered trademarks or trademarks of nstor Corporation in the United States. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark owners. Windows 2000 stands for Microsoft Windows 2000 Server operating system, Microsoft Windows 2000 Advanced Server operating system, or Microsoft Windows 2000 Professional operating system. Internet Explorer stands for Microsoft Internet Explorer. Notes: (1) No part of this manual may be reproduced in any form without the prior written permission of NEC Corporation. (2) The contents of this manual may be revised without prior notice. (3) The contents of this manual shall not be copied or altered without the prior written permission of NEC Corporation. NEC Corporation

3 Introduction The Operation Guide describes how to operate StorView which manages and maintains N F SATA disk array units for NEC Express5800 series machines. This guide is intended for the readers having sufficient knowledge of the features and operation of Windows 2000 and Linux. See the online help or other information sources on the operating systems for unknown matters. The screen displays used in the text may be slightly different from the actual ones. For details of the N F SATA disk array unit, refer to the proper documentation coming with the unit. Legend The following two symbols are used in the text. Indicates the matters which you particularly obey to handle utilities and devices. Indicates the helpful and useful information if you know it

4 Contents 1. General Overview of StorView Major Features of StorView Features of StorView Configuration Array Configuration Scanning Device Initialization Configuration Information Monitoring Icons in StorView StorView Icons RAID Controller, Array, and LUN Icons Drive Icons Enclosure Icons RAID Controller Status and Setting information View Log Event Log of Operating System Arert Function Maintenance Verify Parity Rebuild Setting Hot Spare Disk Take Control Other Features Setting Password Operation of StorView Logical Drive Creation Deleting array and logical drive Deleting the array Deleting the logical drive

5 3.3. Host Spare Disk Creation/Release Creating Hot Spare Disk Releasing Hot Spare Disk Verify Parity for Logical Drive Hard Disk Drive Rebuild Appendix Event Logs of Operating System Alert Report List

6 1. General 1.1. Overview of StorView StorView is a Web (HTTP) server application for the configuration, monitoring, and maintenance of the N F SATA disk array unit. For clients, StorView is an array management utility using browsers. When used in the cluster system, the StorView can monitor operations only on one of the servers. Other operations provided by the StorView are available only from one of the servers Major Features of StorView StorView provides the following three features: - Configuration The configuration feature allows arrays to be configured or reconfigured easily on GUI. - Monitoring StorView monitors the information on array status and resource usage status to display the contents graphically. StorView registers events and errors in defined files as logs. - Maintenance StorView manages and maintains disk array systems through GUIs. It can provide hard disk drive rebuilding, hot spare selection, and array initialization. The guide describes the details of the above features

7 2. Features of StorView This chapter describes the features and screens of StorView. Do the following procedure to start StorView. - for Windows Click [StorView Manager Console] in [Start] menu of Windows, and a Web browser will be opened. - for Linux 1) Start a Web browser by X-window menu or an icon. 2) Input the following address to the address bar of the browser in order to access StorView server. or Input your user name and password registered in installing StorView and Click [OK] button, then the HTML-based graphical main screen of StorView will be displayed. <The input screen of the user name and the password > <Main screen of StorView> <StorView screen displayed on the server monitor-controlled in the cluster system > - 7 -

8 On Windows, when the animation of the screen isn't successfully displayed when starting StorView, the [Internet Options]-[Advanced]-[Multimedia]-[Play animations in web pages] option of Internet Explorer may not be selected. When the screen of StorView isn't displayed during the heavy I/O processing, execute [View]-[Refresh] of the Web browser Configuration This section describes the features required to configure an array from StorView Array Configuration The array configuration can be done in a simple procedure. The setting information is saved in the array connected to the controller. Accordingly, the RAID controller can be removed without requirement of resetting. An array can be created by clicking the [CREATE] button on the main screen Scanning Device The scanning device can detect hard disk drives newly added and those which StorView does not recognize. The scanning device can be run by clicking the [RESCAN] button on the main screen

9 Initialization This feature initializes logical drives. The initialization can be done by clicking the [INITIALIZE] button on the ARRAY INFORMATION screen displayed by clicking an array name on the main screen. - Always initialize any array newly created. - Click the [STOP] button next to the progress bar to cancel the initialization. - When already initializing, it cannot do again. - When you stop / resume initialization, please click the [Pause] button and the [Resume] button Configuration Information The array and RAID controller configuration information stored in the N F SATA disk array unit can be backed up into floppy disks. The backup data may be restored in the same or another environment. In addition, the existing configuration can be cleared entirely. Please back up the configuration information when you configured array and RAID Controller. You need this information when you reduce the disk array unit s recovery time. - Backing up configuration information To back up the configuration information, click a small disk icon (Save) located in the Configuration section of the main screen. - Restoring configuration information To restore the configuration information, click a small folder icon (Restore) in the Configuration section of the main screen. Note: See the storage icons on page 12 for the icons. - Clearing configuration To clear the configuration, click the small garbage (Clear Configuration) in the Configuration section of the main screen. For icons used in StorView, refer to Icon in StorView in this manual. The initialization after the restoration of the configuration information is not required because restoring the backup user data also makes the parity data recreated. Clearing or restoring the configuration causes the existing configuration to be cleared or overwritten, respectively. Accordingly, note sufficiently that such operation makes it impossible to access to the data stored in logical drives if any

10 2.2. Monitoring StorView displays the array status as described below on the screen. This section describes the screens and operations for monitoring the array status. The StorView screen may not be updated occasionally. In this case, update the Web browser. When you click View -> Update To Latest Information on the Web browser, the updated information appears on the screen. When you intend to use the StorView in the cluster system and StorViews are booted on both servers, you may monitor the N F SATA disk array unit from StorViews on these servers. In this case, check that the SCSI and LAN cables are correctly plugged in and then execute Rescan from StorViews on both servers. The serial number of enclosure or a RAID controller is displayed on "WWN" of an enclosure portion or a RAID controller in the screen of StorView

11 Icons in StorView The icons used in StorView are shown below. Storage icon Controller icon Save restore icon Logical drive status icon Array status icon Drive status icon Temperature icon Alarm icon RAID controller icon StorView server icon Power unit icon User icon Fan icon Information icon

12 StorView Icons The following icons appear on the StorView screen. StorView sever icon Indicates the status of the StorView server being logged in. Normal The StorView server operates normally. Blinking yellow A fault may occur in a N F SATA disk array units connected. Blinking red A fault occurs in a N F SATA disk array units connected. User icon Indicates the number of servers logged in to the StorView Server currently. Putting the mouse pointer on an icon allows the user names, computer names, and IP addresses to be displayed. Information icon Indicate the help/version button of StorView. Collects data related to N F SATA disk array units for maintenance. Please do not use it. Displays the help information of StorView. Displays the version of StorView. Storage icon Indicates the storage status. The storage is done normally. Some enclosure configuring devices are degraded. Some enclosure configuring devices have failed. The storage cannot be recognized. Another StorView monitors the array units. Save/Restore icon Indicates the operating configuration information button. Saves the configuration information. Restores the configuration information. Clears the configuration information

13 RAID Controller, Array, and LUN Icons These icons indicate the status and states of RAID controllers, arrays, and LUNs. Controller icon Indicates the number of RAID controllers installed in enclosure. Indicates the single controller status. If this icon blinks red, the battery may have failed or, in the dual controller mode, either one of the RAID controllers may have failed. Array status icon Appears to the left of an array to indicate the whole status of the array. Lighting green. The array operates normally. Lighting yellow. The array is degraded. Lighting red. The array is in the offline status. Logical drive status icon Appears to the left of a logical drive to indicate the whole status of the logical drive. Lighting green. The logical drive operates normally. Lighting yellow. The logical drive is degraded. Lighting red. The logical drive is in the offline status

14 Drive Icons The drive icons indicate the status and states of drive loops and hard disk drives. Drive status icon Indicates the status and state of each hard disk drive. The hard disk drive constitutes an array. The hard disk drive operates normally and thus is available for a disk array or as a hot spare disk. The hard disk drive is specified as the hot spare disk dedicated for an array. The slot of the hard disk drive is empty. The hard disk drive has failed. The hard disk drive is a global hot spare disk. The hard disk drive is now initialized. The status of the hard disk drive cannot be determined. The hard disk drive is now rebuilt. Clicking the [ARROW] icon in the Array section allows the hard disk drive constituting an array to be displayed as such. The array is degraded. The hard disk drive constitutes an array including one or more defected disks. The hard disk drive is running the verify parity

15 Enclosure Icons The enclosure icons indicate the status of the enclosures installed in the N F SATA disk array unit. Fan icon Indicates the status of the fans installed in the N F SATA disk array unit. Both the fans operate normally. The unit may be heated excessively. Either of the fans has failed. Both the fans have failed. Either or both of the fans are removed or cannot be recognized. Power unit icon Indicates the status of the power units installed in the N F SATA disk array unit. Both the power units operate normally. Either of the power units has failed. Both the power units have failed. Either or both of the power units cannot be recognized or are not installed

16 RAID controller icon Indicates the status of RAID controllers installed in the N F SATA disk array unit. RAID controllers operate normally. Temperature icon Indicates the status of the temperature of the N F SATA disk array unit. The unit operates at a normal temperature. The temperature approaches to the upper limit. The temperature reaches the upper limit. The temperature information is unknown or illegal. Alarm icon Indicates the status of the alarm feature of the N F SATA disk array unit. The front bezel alarm rings

17 RAID Controller Status and Setting information The RAID Controller window allows the information on the RAID controller configuration to be viewed and the settings to be changed. This section describes the procedure of viewing the RAID controller configuration information and the items in the information CONTROLLER INFORMATION Start StorView and click the RAID controller icon on the main screen. Select the [INFORMATION] tab on the RAID controller window

18 The following items appear on the window. - Status : Indicates the current status of each RAID controller. - WWN : Indicates the S/N of the RAID controller. - Firmware Version : Indicates the firmware version of the RAID controller. - CPLD Revision : Indicates the current version of the Complex Programmable Logic Device. - Processor : Indicates the operation speed of the processor (CPU) in MHz. - Total SDRAM : Indicates the total memory capacity. 512MB RAM is installed for a single processor. - Resets/Power Cycles : Indicates the sum of the number of resets and that of power off/on cycles for the RAID controller. - Controller Port 0 (P0) : Indicates the SCSI port on the RAID controller. Also indicates the speed and ID of the port. - Controller Port 1 (P1) : Indicates the status of the SCSI port on the RAID controller. Also indicates the speed and ID of the port. - Configuration Name : Indicates the configuration name entered in the initial setup. - Configuration WWN : Indicates the S/N based on the configuration. - Configuration: Cache will be : Not supported. flushed to Array - Configuration: Arrays : Indicates the number of arrays created in the configuration. - Configuration: Logical Drives : Indicates the number of logical drives assigned in the configuration

19 CONTROLLER ENVIROMENT Select the [ENVIRONMENTALS] tab on the RAID Controller window. The following items appear on the window. - Component Status Controller : Indicates the RAID controller installed in the slot. Battery : Indicates the status of the backup battery unit in the RAID controller. UPS : Indicates whether an external power source (UPS) is connected or that the power source has failed, if connected. Temperature : Indicates the temperature sent from the temperature sensor for the RAID controller. - Voltage 12V Input : Indicates the value of 12 VDC supplied to the RAID controllers. 5V Input : Indicates the value of 5 VDC supplied to the RAID controllers. 5V Protected : Indicates the value of 5 VDC with current limiter. 3.3V : Indicates the value of the main 3.3 VDC regulator output on the RAID controller. SDRAM : Indicates the value of 3.3 VDC supplied to SDRAM DIMMs. 2.5V : Indicates the value of the 2.5 VDC regulator output on the RAID controller. Processor Core : Processor Core: Indicates the value of the 1.5 VDC regulator output supplied to the processor chips (CPU). Battery : Indicates the battery voltage directly measured at the battery output

20 CONTROLLER PARAMETERS Select the [PARAMETERS] tab on the RAID Controller window. You need to click the [APPLY] button when changed item(s) are reflected

21 Configuration Name : Allows the configuration name to be changed. Controller LUN : Specify the controller LUN ID as the LUN number used by StorView to communicate with RAID controllers and enclosures. Do not change. Controller Port ID (P0) : Specify the target ID of the selected port. Please do not change from an initial-setting value. Controller Port ID (P1) : Specify the target ID of the selected port. Please do not change from an initial-setting value. Controller Port Data Rate (P0) : It sets the data forwarding speed of the selected port. Please do not change from an initial-setting value(320mb/s). Controller Port Data Rate (P1) : It sets the data forwarding speed of the selected port. Please do not change from an initial-setting value(320mb/s). Packetized SCSI/QAS (P0) : The SCSI/QAS protocol is set up. Please do not change from the state of checking. Packetized SCSI/QAS (P1) : The SCSI/QAS protocol is set up. Please do not change from the state of checking. Log Enclosure Events : It is set up whether an enclosure-related log is registered. Please do not change from the state of checking. Background Drive Verification : Check this option to automatically verify all drive media in the background mode. When an media error is detected, the RAID controller can automatically recover data from the other hard disk drive if the array is not degraded. This function is an important function in case of maintenance of the array. When not checked, check this option. Auto Update Drive Firmware : Check this option to allow the firmware of the hard disk drive to be updated by using the server based on the VT-100 menu. This function is for the maintenance. When checked, uncheck this option. Auto Hot Spare(on drive failure) : Check this option to automatically start the rebuild if a new hard disk drive is inserted into the slot from which the defected hard disk drive has been removed. Auto Rebuild(on drive failure) : Check this option to automatically start the rebuild in the online mode if a fault occurs in a single hard disk drive in the array and the hot swap disk is available. Rebuild Priority : If a large value is selected for the item, the processing power will be used preferentially for rebuild. If a small value is selected, the performance problem of the server during rebuild is minimized. The higher the value is, the shorter the rebuild processing time is. However, the remaining performance of the server is decreased. - After any item with asterisk (*) is modified, both the N F SATA disk array and server connected must be rebooted. - The values of the Controller Parameters are returned to their initial values if all the arrays are deleted. Accordingly, when one or more arrays are created again, set the values again following the Operation Guide of the N F SATA Disk Array Unit Installation Guide

22 CONTROLLER OPERATIONS Select the [OPERATIONS] tab on the RAID Controller window. The following items appear on the window. Status : Click this button to indicate the current status of each RAID controller. Reset : Click this button to reset the selected RAID controller. Do not change. Shutdown : Click this button to shut down the selected RAID controller. Do not change. Update Controller F/W : Click this button to update the firmware of the RAID controllers. Synchronize Time : Click this button to match the time of the server with those of the RAID controllers. Export Controller Logs : Click this button to save the logs in the RAID controllers as files. Clear Controller Logs : Click this button to allow the event logs stored in the RAID controllers to be cleared. DIAGNOSTICS DUMP : Click this button to dump RAID Controller and StorView information. Please Do not use it. This button is provided for maintenance

23 View Log The view log is used to check the events and errors of the RAID controllers, the enclosures in the N F SATA disk array units, and StorView. See "5. StorView Log" for details of the use and features of the view log Displaying View Log 1. Click the [LOGS] button on the left side of the main screen. The View log appears. 2. How to view the log is shown below. - Status : Lights blue (information), yellow (warning), or error (red). - LOG# : Event ID - Date : Date on which the View log is modified last - Time : Time at which the View log is modified last - Device : Device name and S/N number - Message : Contents of view - BACK : Return to the previous page. - FORWARD : Return to the next page. - JUMP TO : Specified event number - EXPORT : Saves the View log. - CLEAR : Clears the View log

24 Saving View Log To save the View log of StorView, perform the procedure shown below. 1. Click the [LOGS] button on the left side of the main screen. 2. Click the [EXPORT] button on the EVENT LOGS window. 3. The file storage window appears. Then save the file in an arbitrary folder. The file is saved in the CSV format

25 Clearing View Log To clear the View log of StorView, perform the procedure described below. 1. Click the [LOGS] button on the left side of the main screen. 2. Click the [CLEAR] button on the EVENT LOGS window. 3. Now the View log is cleared completely. With the capacity of the View log being too large, it may take much time to display the View log or redisplaying the View log may be requested repeatedly if the system load is rather high. When the file size of the View log becomes larger than 10 MB, save the View log and clear it once. The normal file path of the View log is "C: Program Files StorView db ServerLog.log." If another file path was specified in the installation, assume the relevant file path instead

26 Event Log of Operating System StorView registers an event also into the event log (application log) of an operating system. Please see an appendix of a description in this manual about the log to register Arert Function The alert report of the event which StorView registered can be carried out by cooperation with NEC ESMPRO Manager and NEC ESMPRO Agent. To cooperate with NEC ESMPRO Manager and perform the alert report of an N SATA disk array system, it is necessary to set up with the system which installed NEC ESMPRO Manager. Please see the "NEC Express5800 Series StorView Ver.3 Installation Guide for N F". Example of the contents of an NEC ESMPRO Manager alert report

27 2.3. Maintenance The maintenance feature provides the maintenance specified by StorView Verify Parity The verify parity checks whether the fault-tolerant data (parity) of logical drives is correct. If not, the data consistency may be recovered. The verify parity can be done on the Array Information screen displayed by clicking the desired array name on the main screen. - The performance of the server may be decreased during the verify parity. - To cancel the verify parity, click [STOP] next to the progress display. - For ft server, the consistency check is continued if system failover occurs during the verify parity. The verify parity is available only for RAID5 arrays. For RAID1, this feature is faint to be unavailable. This is because RAID1 has no parity Rebuild If one of the hard disk drives constituting the logical drive has failed, the replacement of the defected hard disk drive and the rebuild enable the data to be restored in the new hard disk drive. - The performance of the server may be decreased during the rebuild. - To cancel the rebuild, click the [STOP] button next to the progress display. - For ft server, the rebuild is continued if system failover occurs during the rebuild. Manual rebuild The rebuild can be done manually on the Drive Information window displayed by clicking the drive on the front enclosure view of the main screen. Auto rebuild The rebuild is automatically done by the disk array system in the following two ways: - Standby rebuild If a hard disk drive has failed, the data is rebuilt in the defined hot spare disk. - Hot swap rebuild The data is rebuilt in the new hard disk drive substituting for the defected hard disk drive Setting Hot Spare Disk The hot spare disk is an auxiliary hard disk drive used to rebuild the data saved in the defected hard disk drive during the execution of standby build. There are the following two types of hot spare disks. The desired drive can be selected on the Drive Information window displayed by clicking it on the front enclosure view of the main screen. - Global Hot Spare The global hot spare disk is used to operate for all arrays. - Dedicated Spare The dedicated spare disk is used to operate only for the specified array

28 Take Control If some fault occurs on the device connected between the servers that is monitoring the N F SATA disk array unit in the cluster system and the SATA disk array unit, neither server may monitor the disk array unit. In this case, use the Take Control feature of the StorView to set the system so that the monitor-controlled server can monitor the SATA disk array unit. When the StorView is booted from the monitor-controlled server, the screen appears as shown below. When you click Take Control, the monitor will be enabled. The server that is currently monitoring the disk array unit will be monitor-controlled

29 2.4. Other Features Setting Password Change the password set during the installation of StorView in the following procedure if you want. 1. Click the [SETTINGS] button on the main screen. The screen shown to the right appears. The following items appear on the screen. 2. Enter the password being used in [Old Password]. 3. Enter the password to be set newly in [New Password]. 4. Enter the new password in [Re-type New Password] again and click the [CHANGE] button. 5. The window indicating that the password is changed properly appears. Click the [CLOSE] button. 6. Click the [CLOSE] button to close the Settings window. - Each of the user name and password which can be set in the password change should be up to 32 alphanumeric characters. - Manage the password carefully so that you may not forget it. If you forget the password, first uninstall StorView and then install it again to set a new password

30 3. Operation of StorView This chapter describes several procedures done for the N F SATA disk array unit by using StorView, including creation of a logical drive, rebuild, verify parity, array expansion, and creation or removal of hot spare disk Logical Drive Creation This section describes the procedure of creating a logical drive. 1. Click the [CREATE] button in the Arrays section of the main screen. The Creating Array screen shown to the right appears. If the mouse pointer is moved to a specific position, the information on the specified item appears in the Notes field. 2. Select the drive in which an array is configured from the Select Drives section. When creating an array continuously, the drive already used for creation of an array is displayed in Select Drives, and may be able to select. 3. Enter the name of the array in the Name field. The character which can be used is to 32 characters. 4. Select the desired RAID level of the array in the RAID Level field. 5. Select "N/A" in the Sub-Arrays field. 6. Select the default "64KB" in the Chunk Size field. 7. Select "Initialize" in the Initialize/Trust Array field. 8. Select the default "0%" in the Back-off percent field. 9. Select the default "Automatic" in the Read-Ahead Cache field. 10. Select the desired value in the Writeback Cache field. As the cache size is made larger, the write performance is increased but the read performance is decreased. The recommended cache size is 16 MB

31 11. Click the [CREATE] button. 12. The window indicating that the array creation is directed successfully appears. Then click the [CLOSE] button. When the window of a success is not displayed, please do a step from the beginning again. 13. Click the [CLOSE] button to close the Create Array window. After the initialization is completed, go to the next step. 14. Click the [CREATE] button in the Logical Drives section of the main screen. The CREATE LOGICAL DRIVE screen shown to the right appears. 15. Select the array to be used to create the logical drive from the "Select which Array(s) to use" section. 16. Enter the name of the logical drive in the Name field. The character which can be used is to 32 characters. 17. Enter the capacity of the logical drive to be created in the Size field. The logical drive size should be specified in GBs. 18. Select the default value in the Mapped to field. 19. Check both items in the Availability field. 20. Create the [CREATE] button. 21. The window indicating that the logical drive creation is directed successfully appears. Then click the [CLOSE] button. When the window of a success is not displayed, please do a step from the beginning again. 22. Click the [CLOSE] button to close the CREATE LOGICAL DRIVE window. Now the logical drive is created completely

32 3.2. Deleting array and logical drive Array and logical drive delete procedures are explained below. Deleting a logical driver loses the user s important data. So, pay completely attention to execute this operation. When an array is deleted, the logical drive created on the array will also be erased Deleting the array 1. Access the Arrays section on the main screen and click the array you want to delete. The ARRAY INFORMATION screen appears. 2. Click the DELETE ARRAY button. 3. A confirmation screen appears. Type in the password and click the GO button. 4. The window appears showing that the array is successfully deleted. Click the CLOSE button. If this window does not appear, re-execute the procedures from the beginning. This completes the array delete procedures

33 Deleting the logical drive 1. Access the Logical Drives section on the main screen and click the logical drive you want to delete. The LOGICAL DRIVE INFORMATION screen appears. 2. Click the DELETE button. 3. A confirmation screen appears. Type in the password and click the GO button. 4. The window appears showing that the logical drive is successfully deleted. Click the CLOSE button. If this window does not appear, re-execute the procedures from the beginning. This completes the logical drive delete procedures

34 3.3. Host Spare Disk Creation/Release This section describes the procedure of creating or releasing a hot spare disk Creating Hot Spare Disk 1. Click an undefined drive specified as "AVAILABLE" which will be made a hot spare disk from the front enclosure view of the main screen. The Drive Information window shown to the right appears. 2. Click the [MAKE SPARE] button and select "Make Global Hot Spare." To create a hot spare disk dedicated for the specified array, select the array from "Make Dedicated Spare for..." 3. The window indicating that the hot spare disk creation is directed successfully appears. Then click the [CLOSE] button. If this window does not appear, re-execute the procedures from the beginning. 4. Click the [CLOSE] button to close the DRIVE INFOMATION window

35 Releasing Hot Spare Disk 1. Click the drive specified as "HOT SPARE" or "DEDICATED" for which the feature of the hot spare disk is released in the front enclosure view of the main screen. The Drive Information window shown to the right appears. 2. Click the [REMOVE SPARE] button. 3. The window indicating that the hot spare disk release is directed successfully appears. Then click the [CLOSE] button. If this window does not appear, re-execute the procedures from the beginning. 4. Click the [CLOSE] button to close the DRIVE INFOMATION window

36 3.4. Verify Parity for Logical Drive This section describes the procedure of providing verify parity for the logical drive. 1. Click the array subject to the verify parity from the Arrays section of the main screen. The Array Information window shown to the right appears. 2. Click the [VERIFY PARITY] button and select the desired verify option. - If you select Verify Parity Only, all data and parities are read and compared with the defined parity. - If you select Rewrite Parity, all data is read and the parities are written as new ones. The operation is completed first because of no overhead for comparison. - If you select Verify and Rewrite Parity, all data and parities are read and the parities are compared with the existing parities to be written as new ones if they do not match. It takes the longest time to complete the operation due to the overhead for comparison. 3. The window indicating that the verify parity is directed successfully appears. Then click the [CLOSE] button. If this window does not appear, re-execute the procedures from the beginning. 4. Click the [CLOSE] button to close the ARRAY INFORMATION window. The progress appears in the Arrays section of the main screen

37 3.5. Hard Disk Drive Rebuild This section describes the procedure of rebuilding a hard disk drive. 1. Click the drive to be rebuilt from the front enclosure view of the main screen. The Drive Information screen shown to the right appears. 2. Click the [REBUILD ARRAY] button and select the array to be rebuilt. 3. The window indicating that the rebuild is directed successfully appears. Then click the [CLOSE] button. If this window does not appear, re-execute the procedures from the beginning. 4. Click the [CLOSE] button to close the DRIVE INFOMATION window. The progress appears in the Arrays section of the main screen

38 4. Appendix 4.1. Event Logs of Operating System The table below lists errors among the event logs registered by StorView in the event log (application log) of the operating system. Source: StorView ID Kind Messages Action 513 Error The multicast address is not configured. No communication will take place with other servers. Open the file <StorView folder>/db/ip.db in a text editor, and add the following line: MulticastPort=9191. Save the file and start StorView and press the Rescan button or restart the StorView service. 514 Warnin g Multicast socket creation failure:<reason> Follow the message of <reason>. 769 Error Shared memory used for the Server and the GUI to communicate could not be created nor located. 770 Error A CGI request was initiated from the GUI but the associated shared memory could not be opened. 772 Error The Server performed a CGI request but an internal error prevented the Server from returning the results. 773 Error The Server performed a CGI request but the shared memory needed to return the results could not be created. 774 Error The Server failed to complete a CGI request before its allowed time expired. Terminate StorView. Then start StorView again after a while. Terminate StorView. Then start StorView again after a while. Terminate StorView. Then start StorView again after a while. Terminate StorView. Then start StorView again after a while. Terminate StorView. Then start StorView again after a while. 775 Error The Server CGI script was unable to return CGI request results to the GUI 2563 Error Several failures encountered while trying to communicate with the RAID controller Error There was a fatal controller error. Kernel trace:xx,xx,xx,xx Error The controller s internal temperature <aa>c has exceeded the maximum limit. The controller will shutdown to prevent damage. Terminate StorView. Then start StorView again after a while. Confirm a cable and FC controller. Replace the RAID controller. Confirm FAN unit. Confirm the room temperature Warnin g The controller s internal temperature <aa>c is approaching the maximum limit. You should check the cooling system for problems. Confirm FAN unit. Confirm the room temperature Error The onboard cache protection battery backup unit has failed or has been disconnected Error The drive w/sn <xx xx xx xx xx xx> (Slot<number>)(Drive<number>) has failed due to an unrecoverable error. Sense Data: <yy> Error The drive w/sn <xx xx xx xx xx xx> (Slot<number>)(Drive<number>) has been marked as failed because it was removed Error Rebuilding has failed due to an unrecoverable error on the new drive w/sn <xx xx xx xx xx xx> (Slot<number>)(Drive<number>). Replace the battery. Replace the hard disk drive and perform rebuilding. If the hard disk drive has not been removed because of the maintenance work and so on, it may be caused by the trouble of the hard disk drive. In this case, perform rebuilding after replacement. Replace the hard disk drive and perform rebuilding

39 2829 Error Rebuilding has failed due to an unrecoverable error on another drive w/sn <xx xx xx xx xx xx> (Slot<number>)(Drive<number>) in the array Error The drive w/sn <xx xx xx xx xx xx> (Slot<number>)(Drive<number>) has failed due to a time-out Error The controller s <x> voltage reading measures <aa>v which exceeds the limit. Restore data after backing up data, replacing the hard disk drive, and building RAID again. Replace the hard disk drive and perform rebuilding. Replace RAID controller. When it occurs in both controllers, replace the power supply unit Error Array <name> is in a critical state. Replace the hard disk drive and perform rebuilding Error Drive Loop <x> is down. Check the cable between the array equipment and the additional unit, and the I/O card Error The drive w/sn <xx xx xx xx xx xx> (Slot<number>) on Drive Loop <w> returned a bad status while completing a command. SCSI Info: Operation <type>, Status <type>. If the same error repeatedly occurs in the same disk, replace the disk and perform rebuilding Error The drive w/sn <xx xx xx xx xx xx> (Slot<number>) on Drive Loop <w> timed out for the SCSI Operation <type>. Check the installation of disks Error The controller has detected a data underrun from the drive w/sn <xx xx xx xx xx xx> (Slot<number>) on enclosure slot<nn> for the SCSI Op Code xxx. This is caused by the controller detecting a bad CRC in a frame and usually indicates a link problem, either with cabling or an enclosure Error An unrecoverable drive error has occurred as a result of a command being issued. This may be due to a drive error in a non-fault tolerant array, such as RAID 0, or when the array is already in a degraded mode. The controller will pass the status from the drive back to the host system, to allow the host recovery mechanisms to be used. Details: Host Loop <x>, Host Loop ID <y>, Host LUN Requested <z>, Op Code <zz>, Sense Data <uu>. Check the installation of Hard Disks and the attachment of SCSI cables. When there is no problem, replace the hard disk drive. Perform data backup and restore the data in the newly made array Error The controller self-test has failed. Replace RAID controller 2917 Error The cache data being preserved by the controller s battery was lost. There were <xx> cache entries totalling <yy> 512-byte blocks. Confirm a file system Warnin g 2930 Warnin g 3179 Warnin g The writeback cache on Array <name> has been disabled. Reason(s): <see causes>. An SDRAM ECC error - bit <xx> at address <xx,xx,xx,xx.xx> has been detected and corrected. Power supply <zz> is in a critical state. Confirm the condition of RAID controller and the condition of the hard disk. This event sometimes occurs in case of making of an array, and so on, however, it is not the abnormal case. Replace RAID controller In case of the power supply unit trouble, exchange. Make the power supply switch of the power supply unit ON Error Power supply <zz> is not installed. Load a power supply unit Error Fan <zz> is in a critical state. Replace Fun unit Warnin g Temperature <zz> is operating outside of specifications. Confirm FAN unit. Confirm the room temperature Error Temperature sensor <zz> is in a critical state. Confirm FAN unit. Confirm the room temperature

40 If heavy system load exists in the cluster system, the server may lose the monitoring feature when the screen shown below pops up. The system design allows another server to monitor the N F SATA disk array unit. < Message on Windows> On Windows, if heavy system load exists, the following message screens may be displayed, but the monitoring function is operating correctly. Please click "OK" and close a popup screen. On Windows, any of the following errors may occur in StorView at server shutdown. They do not cause any problems to occur for the operation. - Event log (system) Source : Service Control Manager ID : 7023 Description: StorView terminated due to the following error. The access was refused. - Event log (application) Source : StorView ID : 0 Description : Could not terminate ""server"". StorView error:5." - Event log (application) Source : StorView ID : 0 Description : SetServiceStatus() could not be done. StorView error:6 On Windows, the following warning event is sometimes registered. In this case, confirm the connection of LAN cables, and do RESCAN on each StorView of the servers. If not a cluster system, this event will have no influence upon others. - Event log (application) Source : StorView ID : 514 Description: Server( Network Communicator ): Multicast sokcket creation failure. No communication will take place with other servers Reason : Change of socket to multicast capable failed

41 During heavy I/O, the following error is sometimes registered in StorView, however, there is not a problem for operation. - Event log (application) Source : StorView ID : 264 Description: Server, A user( XXXXX ) has logged into the Server from Host: XXXX, IP address : X.X.X.X. Source : StorView ID : 265 Description: Server, A user( XXXXX ) has been logged out of the Server from Host: XXXX, IP address: X.X.X.X. Source : StorView ID : 773 Description: Server, The server performed a CGI request but the shared memory needed to return the results could not created. Source : StorView ID : 775 Description: Server, The server CGI script was unable to return CGI request results to the GUI. On Linux, the same events as the above are registered in the system log

42 4.2. Alert Report List A part of alert report is described below. ID Kind Classification Solution 513 error StorView Error Please open (the directory name in which StorView has been installed)/db/ip. db by a text editor, etc., and add the row MulticastPort=9191. Then please save the file, and restart StorView after the restart of StorView Service. 514 Warning StorView Warning Please do an appropriate disposal according to <reason> message. 769 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while. 770 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while. 772 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while. 773 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while. 774 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while. 775 Error StorView Error Please close StorView once. Please Start StorView once more after being for a while Error StorView Error Please check whether a cable or RAID Controller has an anomaly Error Controller Error Please replace the RAID Controller Error Temperature Error Please check whether the FAN Units have been failed, whether the environmental temperature (room temperature) is too high, or whether the air entrance on the front panel and the exit on the rear are shut by an obstacle Warning Temperature Warning Please check whether the FAN Units are in normal state, or whether the environmental temperature (room temperature) is too high Error Battery Error Please replace the battery Error Physical Drive Error Please replace the Hard Disk, and execute REBUILD Error Physical Drive Error If the Hard Disk has not been removed for maintenance, please execute REBUILD after the replacement since the Hard Disk may have been broken Error Physical Drive Error Please replace the Hard Disk, and execute REBUILD again Error Physical Drive Error Please back up the data, and configure a new RAID Array after the replacement of the Hard Disk, then restore the data onto it Error Physical Drive Error Please replace the Hard Disk, and execute REBUILD Error Controller Error Please replace the RAID Controller Error Logical Drive Error Please replace the Hard Disk, and execute REBUILD Error Physical Drive Error If the same error has been occurred on the same disk again and again, please replace the disk and execute REBUILD Error Physical Drive Error Please check the installation of disks Error Physical Drive Error Please check the installation of Hard Disks and the attachment of SCSI cables. If no anomaly has been found, please replace the Hard Disk Error Logical Drive Error Please back up the data, and restore it onto the array created newly after the replacement of the failed Hard Disk Error Controller Error Please replace the failed RAID Controller Error Battery Error Please check whether any anomaly exists in the file system Warning Controller Warning The writeback cache has been disabled. Some causes can exist, such as the failed RAID Controller, shortage of charging in the Battery Backup Unit, the degraded Array, the failed Power Unit, etc Warning Controller Warning Please replace the RAID Controller Warning Array Unit Warning Please replace the failed Power Unit, and turn it on Error Array Unit Error Please install the Power Unit Error Array Unit Error Please replace the FAN Unit Warning Array Unit Warning Please check whether the FAN Units have been failed, whether the environmental temperature (room temperature) is too high, or whether the air entrance on the front panel and the exit on the rear are shut by an obstacle Error Array Unit Error Please check whether the FAN Units have been failed, whether the environmental temperature (room temperature) is too high, or whether the air entrance on the front panel and the exit on the rear are shut by an obstacle