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

5 Operation for file systems
This chapter describes the procedures for running Application Agent when backing up a file system.
The descriptions in this chapter apply to the Application Agent CLI. For details on setting up commands,
see the manual HP StorageWorks P9000 Replication Manager Software CLI Reference Guide.
Backing up and restoring a file system
This section provides notes on backing up and restoring a file system.
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 a file system
• The volume being used by the OS cannot be backed up.
• All the application programs using the volume to be backed up must be stopped.
• The cache of the secondary volume must be cleared. To clear the system cache, execute the
EX_DRM_CACHE_PURGE command on the backup server.
• Make sure that another volume is not mounted on the directory of the volume to be backed up
when performing an online backup.
• 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
Event source: ftdisk
Event ID: 57
or
Event type: warning
Event source: disk
Event ID: 51
This event information is logged during a VSS backup when the secondary volume becomes tem-
porarily hidden. However, this will not influence the backup operation.
• When using VSS to back up data, you cannot back up file systems on a dynamic disk.
Precautions when restoring a file system
• Before performing restoration, all the application programs using the volume to be restored must
be stopped.
• The volume being used by the OS cannot be restored.
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