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

For detailed information on instant recovery, refer to the HP OpenView Storage Data
Protector Zero Downtime Backup Concepts Guide and HP OpenView Storage Data
Protector Zero Downtime Backup Administrator’s Guide.
Standard restore from tape
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.
Restoring components
During the restore procedure, the Data Protector VSS integration coordinates
communication between Data Protector and the writers. In general, the restore flow
consists of the following phases: preparing for restore, restoring components, and
notifying the application writers that a restore has been completed. The restore
procedure of the VSS-aware writers consists of the following phases.
1. Data Protector first restores the metadata, which was collected during the backup.
Then it examines the metadata to identify the backup components and determine
the restore method. It also checks if restore to specific volumes is possible.
2. Data Protector connects to the coordinator (VSS service) to notify that the restore
is about to start, which in turn communicates with the writer. Data Protector
restores the data from the backup media to the locations specified in the backup
metadata. During the restore, Data Protector follows the writers' instructions
regarding any additional checking or processing specified in the WMD.
3. After the data are successfully restored from the backup media, Data Protector
informs the coordinator that the restore is completed and the writers can now
access the newly-restored data and start the internal processing, for example
recovery.
Restoring files
For a successful restore of a VSS component, all files comprising this component must
be restored. If a restore of a single file fails, the restore of the a whole component
fails. Data Protector offers an additional restore mode for restoring single files that
does not use the Microsoft Volume Shadow Copy Service, thus solving this problem.
Integrating the Data Protector ZDB integrations and Microsoft Volume Shadow Copy Service70