HP StorageWorks P9000 Replication Manager Software 7.1 CLI User Guide (TB584-96026, May 2011)

The following message will be displayed: DiskPart successfully offlined the se-
lected disk.
5. To display the current disk statuses, enter list disk.
Make sure that the disk statuses of the secondary volumes are Offline in the Status
column.
6. Enter exit to end the diskpart command.
Precautions on restoration
• Make sure that the pair statuses of the copy group to be restored are PSUS (for primary volume)
and SSUS (for secondary volume).
• Do not use thedrmresync command while the drmmediabackup command is backing up data
from tape to the secondary volume, while the drmmediarestore command is restoring data
from the secondary volume to tape, or while the drmmount command is mounting the secondary
volume.
• The following points should be considered regarding restoration when performing a configuration
change by adding a volume mounted in an arbitrary directory on a drive.
If a configuration change is made to mount a volume under M:, at M:\mnt, the drmfsrestore
command is allowed to restore the backup information before the configuration change (back up
only the volume mounted at M:). At this time, if restoration is executed with it mounted at M:\mnt,
the information mounted at M:\mnt on the volume with M: as the mount point directory might be
overwritten and the M:\mnt mount released.
Be careful when restoring the backup information before the volume configuration change or when
performing a restoration by specifying a portion of the mount points in the -target option of the
drmfsrestore command.
• When you are restoring a backup obtained using NetBackup from a tape device, the Application
Agent restore command will result in an error if there are differences in the mount point specification
between the backup and the restoration, as shown below:
Backup:
Make the backup from the secondary volume of the directory mount point specification.
Restore:
Specify immediately under the drive letter as the mount point, and then perform the restoration.
For the restore processing to succeed, you must change the restore target to the directory mount
point specification. To prevent this problem from occurring, specify immediately below the drive
letter as the mount point, and then making the backup.
• When using Snapshot, consider free space of the data pool when you perform restore operations.
• Check free space of the data pool regularly, and increase data pool capacity if necessary.
• For details on how to set the Snapshot data pool, see the Snapshot documentation.
• For details on how to restore data from a tape to a primary volume in a Snapshot configuration,
see Appendix E on page 551.
• When restoration is executed in a Quick Restore environment, the volume maps on the primary
volume and secondary volume are swapped. Therefore, if performance of the disks used for the
primary volume and secondary volume are different, performance for the primary volume will
change and restoration might cause deterioration in performance. In such a case, performance
can be restored when restoration is performed again. For details on Quick Restore, see the
manual for Business Copy .
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