HP StorageWorks Application Recovery Manager Administrator's Guide (T4395-96004, February 2008)

Restore
Microsoft Exchange Server Writer Recovery Specifics
Chapter 4 61
• With the XP VSS provider, if a backup of an LCR or CCR storage
group copy is performed in the resync mode, restore of such backup to
the original location (original database or Exchange Information
Store) by default fails.
The reason is that the source volumes, on which the database copy (or
Exchange Replication Service) resides, are in the suspended mirror
relationship with the replicas, which should be restored to the
original database.
To perform such restore, the source volumes presented to the
database copy are first unpresented from the database copy and
presented to the original database. This results in the lack of source
disks presented to the database copy, so you should again set up the
CCR or LCR environment after restore.
To enable such restore, set the omnirc variable
OB2VSS_FORCE_INSTANT_RECOVERY to 1, perform restore, and after it,
manually set up the LCR or CCR environment.