HP Application Recovery Manager software Integration guide (March 2008)

Restore
Restore from ZDB-to-disk sessions is performed using instant recovery. ZDB-to-disk
session information is saved in the IDB, and the related array-specific information
required for instant recovery is saved in the VSS database (VSSDB).
IMPORTANT:
During instant recovery, the whole replica is restored. This means not only are the
originally selected backup objects restored, but the complete content of all the volume
groups that contained them. After the instant recovery, the content is returned to the
states when the replica was created.
Microsoft Exchange Server 2007 writer concepts
Backup
With Microsoft Exchange Server 2007 you can use two models of replication to
protect your data:
• Local Continuous Replication (LCR)
With LCR, you can create and maintain an exact copy (LCR copy) of databases
in a storage group. An LCR copy is used in case of data corruption because you
can switch to the LCR copy in a few seconds. If an LCR copy is used for backup
and if it is located on a different disk than the original data, then the load on a
production database is minimal.
• Cluster Continuous Replication (CCR)
The same characteristics as with LCR apply to CCR. The difference is only that in
the CCR environment, databases and logs are replicated to separate servers.
Therefore, a CCR copy can be used for disaster recovery. You can perform
backups using VSS on your passive Exchange Server node where the CCR copy
is located and thus reducing the load on the active node.
The replicated storage groups are represented as a new Exchange writer instance,
Exchange Replication Service. They are backed up like original or production storage
groups. Backups of the replicated storage groups (LCR and CCR copies) are possible
only using VSS.
Integrating the Application Recovery Manager ZDB integrations and Microsoft Volume
Shadow Copy Service
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