HP Data Protector A.06.11 Integration Manual page 416

Problem
After restore, the system restart error is displayed
In some cases, if the HBAs are changed on the application system, the software driver
from previous HBAs can cause this error after restore.
Action
Remove older drivers of uninstalled HBAs from the application system.
Problem
After an SQLServer writer instant recovery is restarted, the database cannot be brought
online
If an instant recovery of the SQLServer writer is aborted or fails, you can restart the
session. However, the SQLServer writer may report an error, stating that the files
cannot be prepared during the instant recovery and the session completes with errors.
The issue can appear if the disk was dismounted before the session was aborted and
the files are not visible to the writer. As a result, an error is reported and the database
can not be brought online after restore.
Action
To recover the database after such session:
1. Detach from the database.
2. Attach to the database.
Problem
Creation of an RSG fails when an RSG for the same storage group already exists
When you start a standard restore or instant recovery of the Microsoft Exchange
Server 2007 writer with the option Restore to a non-Exchange location
and create RSG, the following error is displayed:
[Major]
Application specific function 'PostRestoreEndExt' failed with error:
'The mailbox database that you specified is already associated with
a recovery mailbox database.
This error appears if an RSG for a storage group or mailbox database you restore
is already created on some other system.
416 Integrating the Data Protector ZDB integrations and Microsoft Volume Shadow Copy Service