HP Data Protector Software Cell Manager Failover Process (standby Cell Manager)

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HP Data Protector software Cell Manager failover process

(standby Cell Manager) white paper

Executive summary ............................................................................................................................... 2

Solution description .............................................................................................................................. 2

Standby Cell Manager installation and configuration ............................................................................... 3

Installation of Data Protector software ................................................................................................. 3

Patches ........................................................................................................................................... 5

Configuration .................................................................................................................................. 5

Data Protector database replication ................................................................................................... 9

Replication job flow.......................................................................................................................... 9

Replication job content (Windows 2003 Server) ................................................................................ 10

site(A):dp_database1-pre.bat ....................................................................................................... 10

site(B):dp_database2-pre.bat ....................................................................................................... 10

site(A):dp_database1-post.bat ...................................................................................................... 11

site(A):dp_database2-post.bat ...................................................................................................... 11

Replication job content (HP-UX 11.23) .............................................................................................. 11

site(A):dp_database1-pre.sh ........................................................................................................ 11

site(B):dp_database2-pre.sh ......................................................................................................... 11

site(A):dp_database1-post.sh ....................................................................................................... 12

site(A):dp_database2-post.sh ....................................................................................................... 12

Data Protector datalist .................................................................................................................... 12

Backup device configuration ........................................................................................................... 15

Promotion of client to Cell Manager ................................................................................................. 16

Test ........................................................................................................................................... 18

IDB check ...................................................................................................................................... 18

Services and mediapool check ........................................................................................................ 19

Considerations ........................................................................................................................... 20

For more information .......................................................................................................................... 22

Summary of content (22 pages)

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HP Data Protector software Cell Manager failover process (standby Cell Manager) white paper Executive summary............................................................................................................................... 2 Solution description.............................................................................................................................. 2 Standby Cell Manager installation and configuration .......................................................................
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Executive summary This white paper provides information on how to configure and maintain an HP Data Protector client in a Data Protector cell to act as a standby Cell Manager. Solution description Due to potential incompatibilities among hardware and/or backup software between multiple sites of a company, it would be quite difficult to perform data recovery if a disaster where to occur.
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Figure 1 outlines the preceding described setup. Figure 1. Standby Cell Manager installation and configuration Note The following tasks require in-depth knowledge in both areas of Microsoft/HP-UX system administration tasks and HP Data Protector administration tasks. Installation of Data Protector software The following tasks were performed to install Data Protector software on the standby Cell Manager and configure it as a “client“ in the production Data Protector cell.
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The following routines require system administrator/root privileges. 1. Install Data Protector software accepting all defaults with the exception shown in Figure 2. Change the destination folder from C:\Program Files\Omniback\ to D:\Program Files\Omniback\ to match the configuration of the production Cell Manager. Figure 2.
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Patches Be sure to have the same patch level on either Cell Manager host. Figure 3 illustrates a sample patch list off a Cell Manager running on Windows 2003 Server. Figure 3. Configuration The following tasks apply to the newly installed standby Cell Manager on Windows 2003 Server. 1. Stop Data Protector services on standby Cell Manager. Open a Windows command box and type: D:\Program Files\Omniback\bin\omnisv –stop 2.
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Figure 4 shows the Microsoft registry editor with the relevant value name dialog. Figure 4. 4. Change the Startup Type of the Data Protector services Data Protector CRS and Data Protector RDS from Automatic to Disabled. Figure 5. 5. Manually start/restart the following service on the standby cell manager: Data Protector Inet The following tasks apply to the newly installed standby Cell Manager on HP-UX11.23. 1. Manually add a user to the admin group of Data Protector 6.0 on HP-UX11.
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# ./opt/omni/bin/omniusers -add -type W -usergroup admin -name your_name -group \* -client \* Note This command adds a Windows (-type W) user (-name your_name) allowing to use the Data Protector GUI for Data Protector backup/restore management purposes. 2. Stop Data Protector services on the standby Cell Manager. Open a Terminal window and type: # /opt/omni/sbin/omnisv -stop HP OpenView Storage Data Protector services successfully stopped.
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Figure 6. 2. Modify the following parameters in the global options file on the production Cell Manager (site(A)). ScriptOutputTimeOut=600 This was increased to 600 minutes to allow enough time for the “dp_database1-pre.bat” script to complete. Note # ScriptOutputTimeout=TimeoutInMinutes # default: 15 minutes # This timeout is used by the Backup SM.
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Note Global Options File A file that allows you to customize Data Protector. It explains the global options, which cover various aspects of Data Protector, typically timeouts and limits, and affect the entire Data Protector cell. The file is located in the /etc/opt/omni/server/options directory on HP-UX and Solaris systems and in the \Config\Server\Options directory on Windows systems. Note The preceding settings may have to be modified as the IDB size (and backup time) increases.
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Figure 7. Replication job content (Windows 2003 Server) The following section shows the content of the pre- and post-execution scripts and how they are being used in the backup datalists. site(A):dp_database1-pre.bat "d:\Program Files\OmniBack\bin\omnistat" "d:\Program Files\OmniBack\bin\omnib" -datalist dp_database2 Note omnistat generates a list of eventually running backup jobs in the Data Protector GUI. You must not run IDB backups during currently running or scheduled backup sessions.
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site(A):dp_database1-post.bat "d:\Program Files\Omniback\bin\omnir" -omnidb site(A).yourdomain":/ "[Database]: site(A).yourdomain" -session 2007/03/14-2 -tree / -into "D:\IDBrestore" -target site(B).yourdomain Note This is an automatically generated script by the site(A):database2-post.bat script. You must not create or edit this script. site(A):dp_database2-post.bat echo "d:\Program Files\Omniback\bin\omnir" -omnidb site(A).yourdomain:/ "[Database]: site(A).
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fi Note This script removes existing files within the IDB restore destination directory on the standby Cell Manager. site(A):dp_database1-post.sh #!/bin/ksh # This is a sample dp_database1-post.sh script banner performing restore /opt/omni/bin/omnir -omnidb site(A).yourdomain:/ "[Database]: site(A).yourdomain" -session 2007/05/25-14 -tree / -into /IDBrestore target site(B).yourdomain Note This is an automatically generated script by the site(A):database2-post.sh script.
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In Figure 8 two backup datalists are shown representing the IDB backup/replication task: dp_database1 (backup job1) and dp_database2 (backup job2). On the datalist Option tab, open the Backup Specification Options menu and enter the relevant script definitions and hosts where they run on. Note dp_database2 list must not be started manually. Always initiate the IDB backup/replication task by running datalist dp_database1. Figure 8.
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} RAWDISK { } } DEVICE "HP:Ultrium 3-SCSI_site(A)" { } OMNIDB "[Database]: site(A).yourdomain" site(A).yourdomain:"/" { } -protect weeks 4 DATALIST "dp_database2" GROUP "standby_group" DYNAMIC 1 1 PREEXEC "dp_database2-pre.bat" -on_host site(B).yourdomain POSTEXEC "dp_database2-post.bat" -on_host site(A).yourdomain DEFAULTS { FILESYSTEM { } RAWDISK { } } DEVICE "File_Library_on_Standby_Writer0" { } OMNIDB "[Database]: site(A).yourdomain" site(A).
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{ } -protect days 2 The previous two datalists require the IDB to be selected as a backup object. Figure 9 shows the backup object detail for both datalists. Figure 9. Backup device configuration The described backup procedure uses two backup devices to archive proper data security and different data retention policies. Figure 10 shows configuration details of the used backup devices.
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Figure 10. Promotion of client to Cell Manager Promoting site(B) to become a Cell Manager requires the following steps to be taken: 1. Copy the following directories (and files) from the restore area (Windows): D:\IDBrestore\D$\Program Files\Omniback\Config\Server\ to D:\Program Files\Omniback\Config\Server D:\IDBrestore\D$\Program Files\Omniback\db40 to D:\Program Files\Omniback\db40 2. Copy the following directories (and files) from the restore area (HP-UX 11.
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Note Moving the configuration files into place will activate all backup schedules as they were configured on the production Cell Manager site(A) (after the Cell Manager services are started). This may not be desirable during a testing situation.
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Data Protector CRS Data Protector RDS 7. Start (and check) all Data Protector services: D:\Program Files\OmniBack\bin\omnisv –stop D:\Program Files\OmniBack\bin\omnisv –start D:\Program Files\OmniBack\bin\omnisv –status # /opt/omni/sbin/omnisv –stop HP OpenView Storage Data Protector services successfully stopped. # /opt/omni/sbin/omnisv –start HP OpenView Storage Data Protector services successfully started.
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Filenames -filenames OK DCBF(presence and size) -bf OK SIBF(readability) -sibf OK OMNIDC(consistency) -dc OK DONE! Note The contents of the IDB must be logically correct. In other words, the parts must be consistent and in good working order. For example, all details must link to valid tablespace entries, all filenames must be part of existing objects, and so on. You can manually perform consistency checks for specific parts of the IDB and for the whole IDB.
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Good Default Exabyte ExaByte No 0 0 Good Default File File No 0 0 Good Default LTO-Ultrium LTO-Ultrium No 0 0 Good Default Optical Optical No 0 0 Good Default QIC QIC No 0 0 Good Default SAIT SAIT No 0 0 Good Default SD-3 SD-3 No 0 0 Good Default SuperDLT SuperDLT No 0 0 Good Default T3480/T4890/T9490 T3480/T4890/T9490 No 0 0 Good Default T3590 T3590 No 0 0 Good Default T3592 T3592 No 0 0 Good Default T9840 T9840 No 0 0 Good Default T994
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cell server to the production cell server will make sessions run on the standby cell server reappear on the production cell server (this is not part of this white paper).
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For more information For more information on HP Data Protector, visit http://www.hp.com/go/dataprotector. © 2007 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.