HP Storage Mirroring V5.1 Software - Manual (Page 136)

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Only if backup copy is more recent—This option restores only those files that are
newer on the target than on the source. The entire file is overwritten with this option.
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Use block checksum comparison/delta block transfer—Specify if you want the
restoration process to use a block checksum comparison to determine which blocks are
different. If this option is enabled, only those blocks (not the entire files) that are
different will be restored to the source.
j. If you want to configure orphan files, click the Orphans tab. The same orphan options are
available for a restoration connection as a standard connection. See Configuring and
removing orphan files on page 11-7 for more details.
k. If your source was archiving files, select the Archive tab. Select how you want to restore
those files that have been archived. See the tab Archive Restoration Criteria on page 16-2
for details on how the restoration and archive criteria work together.
l. If you selected the link restore, specify where you want the archive data to be located.
Specify One Per Volume to use one archive bin on each volume of the target. Specify
Centralized To Volume and specify a volume to store all archive data in the same location.
m. If your original source was using Replicate NT Security by Name, you must enable that
option on the target before you start the restoration. The option is available on the target’s
Server Properties on the Source tab.
n. Click Restore to begin the restoration. You can identify a restoration connection because it is
enclosed in parenthesis ( ) and it has _Restore appended to the end of the replication set
name.
8. Because there are no users accessing the target data, the restoration process is complete when
the Mirror Status is Idle. When the Mirror Status is Idle, disconnect the restoration
connection from the target.
9. Your original connection on the source, if it still exists in the Management Console, will be in a
Mirror Required state. Right-click the connection and select Mirror, Start. Select the type of
mirror you wish to perform and click OK. When prompted to start replication, click Yes.
10. Once you have restarted the mirror and replication, you can allow users to reconnect to the
source.
NOTE: If you are using a database application, do not use the newer option unless
you know for certain you need it. With database applications, it is critical that
all files, not just some of them that might be newer, get mirrored.
NOTE: If your target is a cluster, take the Double-Take Source Connection resource offline
to disconnect the connection.
During the restoration, only the data is restored back to the source. Shares are
not created on the source during the restoration. Shares that were created on the
target during failover will need to be created manually on the source.