HP XP Array Manager Software - Manual (Page 402)

Precautions when restoring an Exchange database
Precautions when restoring from a tape
When using the drmmediarestore command, or EX_DRM_TAPE_RESTORE extended command
to restore an Exchange Server storage group, you need to delete the Exchange Server transaction
log files remaining on the secondary volume. On the backup server, delete the transaction log files
as follows. Note that if you are using NetBackup for the tape backup management software, you do
not need to perform the following when performing tape backup with the
-raw option specified.
1. Execute the drmtapecat command with the -o MSEXCHANGE option specified. Then, check
the backup ID of the tape backup used for restoration, and check the absolute paths to the folders
containing the transaction log files for the Exchange database.
2. The absolute paths to the folders containing the transaction log files must be checked for all the
Exchange database that have been backed up with the backup ID used for the restore operation.
3. Use the drmmount command to mount the secondary volume. Use the backup ID determined
from step 1.
4. Check the folder in which the transaction log files specified in step 1 are stored, as well as the
files stored in the folder. Note that when you use the
drmmount command to mount the secondary
volume, the command might assign a drive letter that is different from the drive letter that was
assigned during backup. In this case, replace the drive letter you found in the transaction log file
in step 1 with the drive letter assigned by the
drmmount command.
5. Delete any files in the folder displayed in step 4 at have the .log extension.
6. Perform steps 3 and 4 for all Exchange databases that have been backed up.
7. Use the drmumount command to unmount the secondary volume. The backup ID used here is
the same as that used in step 1.
Note on performing a recovery using roll forward
If recovery is performed using roll forward (the drmexgrestore command is executed with the
-recovery option specified) and there are insufficient transaction logs, the KAVX1510-E or
KAVX1703-E message will be output. If the drmexgbackup command with the -transact_log_del
option is used to delete the transaction logs, roll forward cannot be performed for any backup obtained
before that point.
Procedure for handing the message (KAVX1510-E)
For restorations with roll-forward recovery (executing the drmexgrestore command with the
-recovery option specified), if the Exchange database to be recovered has more than 1,008
transactions log files, a roll-forward will be completed when the drmexgrestore command is
executed, but the Information Store will not be mounted. In this case, the KAVX1510-E message is
output. For details on this message, contact your HP support representative for assistance.
Notes on restoring data obtained with a VSS backup
• While restoring data obtained in a VSS backup, you must not open the physical disk resource
properties on the cluster administrator window. If the properties are open, restoration might fail.
Operation for Exchange databases 402