ETERNUS SF AdvancedCopy Manager Operator's Guide for Tape Backup Option 13.0 -Microsoft(R) Windows(R) 2000/Microsoft(R) Windows Sever(TM) 2003-, -Solaris-, -HP-UX-, -Linux-, -AIX-

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Chapter 8 Customization of Storage Pool after Start of Operation

This chapter explains how to customize the tape storage pools, which were defined during installation, after the start of operation.

TSM commands are used to implement these functions. For details of the commands, see the "ETERNUS SF TSM Administrator's Reference".

8.1 Adding a Tape to the Storage Pool

If the storage pool runs short of tape after the start of operation, add a tape as follows.

1. Check in a tape. See "Loading a Tape (CHECKIN)" for information on how to check in a tape.
2. For private operation, register the tape in the storage pool. See "Registering a tape volume" for information on the tape registration procedure.

8.2 Deleting a Tape from Storage Pool

If a tape in the storage pool is no longer required, delete it as follows.

1. If the tape to be deleted contains backup data, delete the backup history information. Use the "History information delete command (acmhistdel)" to do this.
2. Check out the tape. Use the "checkout libvolume" command to do this.

   tsm> checkout libvolume <library name> <volume name> checklabel=yes remove=yes

   
   

   Example is as follows; Check out volume DAT001 from library LT160.

   tsm> checkout libvolume LT160 DAT001 checklabel=yes remove=yes

   • Specify the "remove=yes" option (default) to unload the tape to the entry port of the library.
   • If "remove=no" is specified, the tape is returned to the original cell but is deleted from the TSM database (the tape is no longer displayed by the query libvolume command).
   • Checkout processing is performed in the background. For information on the processing results, therefore, reference the log on the TSM server (dsmserv) or activity log.

After the tape is unloaded to the entry port, the "reply" command is requested for the log on the TSM server. Entering the "reply" command completes TSM checkout.

8.3 Changing the Device Class Settings

To change an option defined in the device class, do the following.

tsm> update devclass <target device class name> <option to be added or changed>

Example is as follows; Change mountretention in the device class DAT-DEVC to 5 minutes.

tsm> update devclass DAT-DEVC mountretention=5

8.4 Changing the Storage Pool Settings

To change an option or the simultaneous write mode defined in a storage pool, do the following.

tsm> update stgpool <target storage pool name> <option to be added or changed>

Example is as follows; Enable simultaneous write to COPYPOOL2 in addition to COPYPOOL that is already set in storage pool DAT-POOL.

tsm> update stgpool DAT-POOL copystgpools=COPYPOOL,COPYPOOL2 copycontinue=yes

8.5 Reclamation

Reclamation is a function for reclaiming a TSM tape. TSM deletes backup data that has exceeded the retention period (that has exceeded the specified number of generations or preservation days) in units of backup files. The area to which backup data has been written cannot be reused unless all backup data on the tape is deleted. The reclamation function thus moves only valid data in the tape in moth-eaten state to another tape so that the original tape can be reused.

8.6 Migration

Migration forms a hierarchical structure of storage pools and moves data to a low-order storage pool. The migration function is automatically executed by setting the migration start threshold and stop threshold in storage pools. It cannot be executed manually.

8.7 Collocation

TSM usually puts backup-archive data from multiple clients into one volume (add and write). Using the collocation function puts backup-archive data from the same client into a minimum possible volume.

8.8 Backup and Restoration of Storage Pool

Backup of a storage pool means to copy the backup data in a storage pool to another storage pool in case of tape or other media failure or disaster.
The backup data can also be restored in the original storage pool.

8.9 Deletion of Settings

To delete storage pool or device class settings, use the "delete" command.

+To delete the storage pool settings

tsm> delete stgpool <target storage pool name>

+To delete the device class settings

tsm> delete devclass <target device class name>

Do not use the TSM "delete" command to delete backup data.
Otherwise, an inconsistency occurs in the management information between TSM and Tape Backup of AdvancedCopy Manager. To delete backup data, be sure to use the "History information delete command (acmhistdel)".

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