HP Storage Mirroring V5.1 Software - Manual (Page 13)

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Restoration
Restoration provides an easy method for copying replicated data from the target back to its original
location on the source. The process only requires you to select the source, target, and the
appropriate replication set. There is no need to select files or to remember where the data came from
on the source since that information is maintained by Storage Mirroring.
Restoration can be used if the source data is lost due to a disk crash or when the most up-to-date
data exists on the target due to failover. At the time of a source server failure, your Storage Mirroring
target will contain the same data as your Storage Mirroring source. If you are using the Storage
Mirroring failover capabilities, users can continue updating data on the target server while the
problems on the source are resolved. Because of the continued updates on the target, when the
source server is ready to come back online, the two servers will no longer contain the same data.
Restoration is the process of copying the up-to-date data from the target back to the original source
or a new source.
When a restoration is complete, the source and target are again synchronized. Replication continues
from the target to the source, keeping the two servers synchronized, until you disconnect the
restoration connection.
Source Target
2/4 2/5
All files can be
Checksums can
calculate blocks to
Different files can
be restored
New files are restored
Identical files are
not restored
Flexible restoration options allow you to choose
which files are restored from the target to the source.
restored
be restored