HP Application Recovery Manager software A.06.10 Administrator's guide (March 2008)

Copying replica data without retaining the source volume
With this method, the source volumes to be replaced are first converted into a
container and then reused for the creation of new snapclones from the replica. The
procedure is the same as reusing the oldest replica in a replica set during backup.
The old source volumes are not retained and if the restore session fails, the original
application data residing on the source volumes is lost.
The replica is retained in the replica set and another instant recovery is possible from
the same session.
Advantages
• The performance characteristics of the restored volumes remain the same. This is
because the physical disks and the characteristics of the source storage volumes
(size, RAID level) do not change.
• Another restore from the same backup is possible.
• No additional storage space is required for restore.
Disadvantages
• Restore is not as fast as with the "switching disks" method.
• The "old" source volumes are lost during restore.
• If instant recovery session fails, the original data in the source volumes to be
restored will be lost.
To perform this type of restore, select the option Copy replica data to the source
location and clear the option Retain source for forensics in the Application Recovery
Manager GUI.
Instant recovery procedure
Prerequisites
• If a disk image backup with filesystems mounted on the selected raw disks was
performed, manually dismount the filesystems on the disks to be restored before
disk image instant recovery. If the restore option Check the data configuration
consistency is not selected, the disks are dismounted automatically. In any case,
re-mount the filesystems back after instant recovery.
Restore48