HP Storage Mirroring V5.1 Software - Manual (Page 50)

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Mappings—You must specify the location on the target where the source’s replication set data
will reside. Storage Mirroring offers two predefined locations as well as a custom option that
allows you to create your own path.

All To One—This option replicates data from the source to a single volume on the target.
The pre-defined path is \source_name\replication_set_name\source_volume. If you are
replicating from multiple volumes on the source, each volume would be replicated to the
same volume on the target. For example, c:\data and d:\files for the source Alpha and
replication set DataFiles would be replicated to c:\alpha\DataFiles\c and
c:\alpha\DataFiles\d, respectively.

One To One—This option replicates data from the source to the same directory structure
on the target. For example, c:\data and d:\files on the source will be replicated to c:\data
and d:\files, respectively, on the target.

Custom Location—If the predefined options do not store the data in a location that is
appropriate for your network operations, you can specify your own custom location where
the replicated files will be sent. Click the target path and edit it, selecting the appropriate
location.

Start Mirror on Connection—Mirroring can be initiated immediately when the connection is
established. If mirroring is not configured to start automatically, you must start it manually
after the connection is established.

Start Replication on Connection—Replication can be initiated immediately when the
connection is established. If replication is not configured to start automatically, you must start
it manually after the connection is established. If you disable this option, you will need to
perform a mirror prior to beginning replication to guarantee integrity.

Block Target Path(s) on Connection—You can block writing to the data located in the
target paths. This keeps the data from being changed outside of Storage Mirroring processing.
If you are going to use failover, any target paths that are blocked will automatically be
unblocked during the failover process so that users can modify data on the target after
failover. During a restoration, the paths are automatically blocked again. If you failover and
failback without performing a restoration, the target paths will remain unblocked. You can
manually block or unblock the target paths by right-clicking on a connection.
NOTE:

If you are mirroring and replicating dynamic volumes or mount points, your
location on the target must be able to accommodate the amount of data that
you are replicating.

If you are mirroring and replicating sparse files and your location on the target
is a non-NTFS 5 volume, the amount of disk space available must be equal to
or greater than the entire size of the sparse file. If you are mirroring and
replicating to an NTFS 5 volume, the amount of disk space available must be
equal to or greater than the on-disc size of the sparse file.

If you are mirroring and replicating multiple mount points, your directory
mapping must not create a cycle or loop. For example, if you have the c:
volume mounted at d:\c and the d: volume mounted at c:\d, this is a circular
configuration. If you create and connect a replication set for either c:\d or d:\c,
there will be a circular configuration and mirroring will never complete.
WARNING: Data integrity cannot be guaranteed without a mirror being performed. This option
is recommended for the initial connection.