HP StorageWorks SAN Virtualization Services Platform Manager Command Line Interface User Guide (5697-0936, May 2011)

3. Unassign the snapshot from the backup server, and delete the snapshot by using a script that
runs the following command:
UnmountVirtualDisk –VirtualDisk SnapshotName, -MountPoint H:\ —timeout 900
DeletePiTOrSnapshot -name SnapshotOrPiTName -timeout 900
If you want to delete the PiT, add the following command to this same script:
DeletePiTOrSnapshot -name NameofPiT, -timeout 900
Scheduling of scripts
The last step for implementing the server-free backup in the VSM environment with a non-Windows
operating systems and automating the process is to schedule the scripts.
• On the application host:
Use the operating system scheduler to schedule the script that creates the PIT to run a couple
of minutes before the scheduled backup job starts.
• On the backup host:
Most backup applications provide the option to run the script before the actual backup job
starts to run (pre-backup) and to run another script after the backup job is completed
(post-backup).
Place the script that creates the snapshot and assigns the snapshot to the backup server as
the pre-backup script, and the script that unmounts the snapshot from the backup server. Delete
the snapshot and, optionally, delete the PIT as the post-backup script.
Server-free backup for the Windows operating system
On the Windows operating system (Windows Server 2003 SP1 and later), the server-free backup
is easier to implement. The Windows operating system includes the Microsoft VSS (Volume Shadow
Copy Service), which performs these tasks:
• Coordinates and manages the creation of the snapshot (PiT and snapshot).
• Assigns the snapshot to the backup server and the cleaning processes after the backup is
finished.
• Process automatically initiated by the backup software.
You do not need a VSM CLI script when using Microsoft VSS. For more details on Microsoft VSS,
refer to the Microsoft online documentation.
For information on installing the SVSP VSS hardware provider on the Windows host, see the HP
StorageWorks SAN Virtualization Services Platform Administrator Guide.
Server-free backup for the Windows operating system 59