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

Introduction
Concepts
Chapter 114
Restore Using HP StorageWorks Disk Array XP
This type of restore can be performed if a backup was created with the
XP provider in the resync mode.
With this type of restore, the XP integration agent (SSEA) synchronizes
an S-VOL with its P-VOL and then splits the pair during the restore.
If the option Wait for the replica to complete is selected, SSEA
waits for the re-synchronization or copy process to complete (normal
restore). Only then, the source volume is available. If this option is not
selected, the source volume is immediately available while the
re-synchronization or copy process is running in the background (quick
restore).
IMPORTANT The old source volume is not retained after restore so if the restore
session fails the original application data is lost.
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.