Working With Vss Snapshots - HP BB118BV - StorageWorks Data Protector Express Package User Manual

You must use the Data Protector Express Administrator, rather than the Data Protector Express service, to
back up mapped drives because of the way that Windows implements mapped drives. The service must be
stopped for the backup of the mapped drives to work.
The HP Data Protector Express service must be stopped to allow the proper backup of mapped
drives. The service cannot be running when you select mapped drives for backup because of the method
Microsoft uses to authenticate mapped drive access. If the HP Data Protector Express service is not
stopped when you select mapped drives for backup, the service will fail to authenticate to the selected
mapped drives, and they will not be backed up. Because the HP Data Protector Express service must be
stopped, you need to run Data Protector Express in application mode (the program must be open when the
backup job is scheduled to occur), or the backup will not launch.
To enable or disable mapped drives
1. Open the Catalog view from the Administration desk bar.
2. In the main object detail area, select Network.
3. Select the machine whose mapped drives are being configured.
4. Select System Drivers.
5. Locate and select File System Stream and display its properties.
6. Select the Configuration page.
7. Enter a list of mapped drives in the appropriate list (e.g., JKLMQRSZX).
You can enable or disable as many drives as you need. The list does not need to be listed in
alphabetical order and Data Protector Express does not distinguish between capital and lower-cased
letters for this purpose.
For information about other options on this page, see File system stream.
Backup jobs can create snapshots using Microsoft Volume Shadow Services (VSS) on platforms that
support VSS.
VSS freezes the volume data at the point in time of the snapshot creation by creating a temporary
snapshot. Any changes after that point in time will not be backed up until the next backup job. The
snapshots are deleted after the job has finished. If VSS cannot create a snapshot the backup will proceed
and the error will be noted in the job log.
Snapshots will affect an entire volume, not just the selected files. So jobs logs may indicate more space
was snapped than you expect.
To turn off VSS for a job
1. Open the Property page for the job.
2. Select the Options page.
3. Click the Advanced Options... button
4. Deselect the Enable Snapshots checkbox