HP Data Protector A.06.00 additional writers and HP StorageWorks Disk Array XP support for Microsoft Volume Shadow Copy Service integration

8. Data Protector backs up the data from the shadow copy to media and then
notifies the VSS service that the shadow copy can be released. VSS issues a
command to the shadow copy provider to destroy the shadow copy that has
been already backed up. Figure 3 on page 20 shows the relations between the
actors of a local or network VSS backup.
Figure 3 Local or network VSS backup
Data consistency
The filesystem backup does not guarantee application data consistency, only filesystem
consistency. Application data consistency can be achieved only by using supported
application writers, such as Microsoft Exchange Server writer.
Restore
Data Protector offers two restore modes:
• component restore using the VSS service
• file restore using the DMA instead of VSS.
By default, Data Protector restores writer components using the VSS service.
Instant recovery is also available within the Data Protector VSS integration. This
functionality requires VDS hardware providers.
Integrating Microsoft Volume Shadow Copy Service with Data Protector20