HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0109, July 2009)

Figure 13 Backup policy attributes
Figure 14 shows that VSS was selected as the snapshot method for use. VSS was selected through
the Advanced Snapshot Options... button shown in Figure 13.
Figure 14 VSS selected as the snapshot method
VSS deployment with VSM virtual disk groups
To reference multiple VSM virtual disks as a single entity, you must place the VSM virtual disks in a
virtual disk group (VDG). Every operation that you perform on the VDG is carried out synchronously
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