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

7 Operation for Exchange databases
This chapter explains the procedures for running Application Agent when backing up Exchange
databases. The descriptions in this chapter apply to the Application Agent CLI. For details on setting
up commands, see the HP StorageWorks P9000 Replication Manager Software CLI Reference Guide.
The term storage group refers to a database management unit created on Exchange Server. Note
that this definition differs from the term storage group used in other Hitachi Command Suite products.
Backing up and restoring a storage group
This section provides notes on backing up and restoring an Exchange database.
For details on common operating notes that apply to all kinds of objects subject to backup, see
“PrecautionsPrecautions on operations” on page 225.
Precautions when backing up an Exchange database
• When executing online backup with the drmexgbackup command, forcibly copy the data from
the primary volume to the secondary volume while the Information Store is still mounted. It may
be impossible to restore the backup data acquired by this function. To ensure restoration of the
backup data, first use the drmexgbackup command to perform a cold backup. Make sure that
the backup data is stored, and then perform an online backup.
• When executing online backup with the drmexgbackup command, confirm that no other volume
is mounted in the directory on the volume subject to backup.
• When you use the drmexgbackup command to obtain repeated backups, you may experience
periods in which the Exchange transaction log expands very suddenly. In this case, specify the
-transact_log_del option when executing the drmexgbackup command. However, since
transaction log files are deleted after backup when this option is specified, you will only be able
to perform restoration with roll-forward recovery (executing the drmexgrestore command with
the -recovery option specified) for the most recent backup. You cannot perform restoration with
roll-forward recovery for backups obtained in the past.
• When specifying the -transact_log_del option to execute a cold backup on a clustered
server system configuration, specify the -c online option at the same time.
• Do not access the operation-target volume by, for example, using Windows Explorer while a
backup or restoration command is being executed in a Veritas Cluster Server for Windows envir-
onment. Doing so might prevent a cluster resource from being switched offline, and might thereby
cause an error to occur in the backup or restoration command.
• When a VSS backup is executed, the following event information might be output to the Windows
application event log on the backup server:
Event type: error
Event source: PlugPlayManager
Event ID: 12
or
Event type: warning
CLI User Guide 395