VSS backup types
The following backup types are available with the Data Protector VSS integration:
• Local backup
The volume shadow copies are presented to the same application system from
which they were created. The shadow copies are backed up to tape or to disk
from the application system. If they are kept on the disk array, they can be
mounted on the application system.
• Transportable backup
Instead of presenting the volume shadow copies to the application system, they
are presented to an alternate system, the backup system, from which they are
backed up to backup media at leisurely pace. In this way, the impact of backup
on performance on the application system is reduced to the creation of volume
shadow copies. If the shadow copies are kept on the disk array, they can be
mounted on the backup system. A VSS hardware provider that supports
transportable snapshots is required.
VSS restore
Using Data Protector, you can perform the restore:
• From backup media to the application system on LAN (standard restore).
• Using the instant recovery functionality.
During instant recovery, the data is restored from backup replica to the source
volumes on the application system. Only the needed differential and transaction
log backups are restored from the backup medium.
Instant recovery considerations
• The instant recovery functionality restores data from a replica on the backup
system to the source volumes on the application system. Therefore, using instant
recovery, it is only possible to selectively restore separate writer’s components if
they reside on separate source volumes.
Integration concepts
The Data Protector integration with the Microsoft Volume Shadow Copy Service
provides full support for certified VSS writers.
Integrating the Data Protector ZDB integrations and Microsoft Volume Shadow Copy Service332
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