HP Data Protector A.06.11 Integration Manual page 176

Limitations
• A combination of VSS snapshot backups and non-VSS backups (for example,
incremental stream backups) is not supported.
• You can back up only the whole server or full storage groups. Single stores cannot
be backed up.
• Circular logging must be disabled.
• With Exchange Server 2003, only one VSS backup session can be running on
the same application system at once. With Exchange Server 2007, only one VSS
backup session backing up a specific storage group can be running on the same
application system at once. Consequently, if you start such a backup session
while another one is in progress, the latter waits until the first one finishes.
Rollforward recovery
Transaction logs must be backed up the rollforward operation.
Consistency check
A backup of the Microsoft Exchange Server database is considered as successful
only if the consistency check of the replicated datafiles succeeds. The consistency
check is enabled by default. To disable the consistency check, click on a created
backup specification, right-click Microsoft Exchange Writer in the Source tab, and
then click Additional options. In this page, you can also specify to throttle the
consistency check for a second after the specified number of input/output operations.
176 Integrating Microsoft Volume Shadow Copy Service with Data Protector