HP StorageWorks Storage Mirroring Recover User's Guide (T5437-96008, November 2009)

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Note:
● If you are using a SQL server named instance for a back-end database
server in your SharePoint setup, both the source and target SQL servers
must have named instances with the exact same name and logical drive
structure as the source SQL server installed prior to configuring
protection.
● To enable the ability to add or remove SharePoint instances, you can
launch Application Manager through the command line using the
/sharepoint /advanced option (dtam /sharepoint /advanced). With this
option enabled, a dialog box will appear when you select Configure
Protection.
● If you need to reduce the amount of mirroring and replication traffic, you
may choose to deselect the tempdb database if it is not necessary.
You can also select non-application specific data under the Volumes folder.
Note:
If Override Generated Rules is selected on the Advanced tab, this control will
be disabled.
To refresh the tree view to show new source directories or files that may have been
added or removed, select the logical node, then click the Refresh button. If a node in the
volumes branch is selected, then the items under that node will be refreshed.
Mirror type
The following options specify what files you want sent from the source to the target
during a mirror.
● Full—Copies all of the directories and files in the replication set to the target
machine. If a mirror has already been completed, another full mirror will overwrite
the data on the target.
● Checksum—(Default) This option performs a checksum comparison calculation. A
checksum calculation is a formula applied to blocks of data to determine if the
binary make-up of the block is identical. If the checksums on the source and target
machine are the same, the block is skipped. If the checksums on the source and
target machine are not the same, the block on the source is sent to the target. With
this option, the entire file is not overwritten; only the block that is received from the
source is overwritten.
Note: The Mirror type setting also applies to the restoration connection.
Enable compression
This setting enables compression of data that is transmitted from the source to the target.