HP StorageWorks Storage Mirroring user's guide (T2558-96073, February 2008)

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 Overwrite existing files during restore—This option restores all existing files by overwriting them. Any files that do
not exist on the source are written also. If this option is disabled, only files that do not exist on the source will be
restored.
 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.
 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.
10. 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 14-12 for more details.
11. If you are original source was using Replicate NT Security by Name, you must enable the same option on the target
before you start the restoration. Since a target is acting like a source during a restoration, the option must be set for the
target also. This option is available on the target’s
Server Properties on the Source tab.
12. Click Restore to begin the restoration.
13. After the restoration is complete, disconnect the restoration connection. 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.
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: 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.