HP XP Array Manager Software - Manual (Page 401)

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 XP7 Replication Manager Application Agent 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 HP XP7 Command View Advanced
Edition 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
“
Precautions on operations ” on page 225.
Precautions when backing up an Exchange database
• When you use the drmexgbackup command to obtain repeated backups, you might 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.
• 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
event log on the backup server:
Event type: error
Event source: PlugPlayManager
Event ID: 12
or
Event type: warning
Event source: ftdisk
Event ID: 57
or
Event type: warning
Event source: disk
Event ID: 51
This Windows event information is logged during a VSS backup when the secondary volume be-
comes temporarily hidden. However, this will not influence the backup operation.
Application Agent CLI User Guide 401