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

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may choose to deselect the tempdb database if it is not necessary.
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.
Significant improvements in bandwidth utilization have been seen in Wide Area Network
(WAN) configurations or in any case where network bandwidth is a constraint.
Compression may be used in Local Area Network (LAN) configurations, though it may
not provide any significant network improvements.
You can specify compression for different source/target connections, but all connections
to the same target will have the same compression settings.
By default, compression is disabled. To enable it, select Enable Compression, then set
the level from minimum to maximum compression.
Next step:Configure BlackBerry settings
Configuring BlackBerry settings
If you have not done so already, launch the Protecting a BlackBerry Server workflow.
The BlackBerry tab includes options to protect the BlackBerry application.