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

on all VDG members. VDGs are often used to encapsulate data files and log files of the same database
into a one entity.
From a server perspective, the data files and the log files reside on two separate drives. From a backup
and recovery perspective, the data files and the log files are two components of a single entity. A
backup snapshot must be synchronously captured on both the data drive and the log drive.
When a VSS snapshot is triggered on a virtual disk that is also a member of a VDG, the VSM expects
the VSS to trigger a snapshot for the other members of the VDG as well. If the snapshot is not triggered
for all members of the VDG, the VSM fails the creation of the snapshot.
If you create a VSS snapshot with the VShadow utility, make sure that all of the drives that represent
the members of the VDG are included in the command. If you create the VSS snapshot with a backup
application, configure the backup application to backup all of the drives that represent the members
of the VDG.
Uninstalling the SVSP VSS hardware provider
You can remove the SVSP VSS hardware provider from the host computer by selecting Start > Control
Panel > Add or Remove Programs and selecting the entry for the SVSP VSS hardware provider.
Adding devices to the domain48