Configuring connection settings

This setting identifies the Target IP Address that the Double-Take Availability data will be transmitted through. You should only change this setting if you want to select a different route for Double-Take Availability traffic. On a machine with more than one NIC, this increases the flexibility of configuring Double-Take Availability activity. For example, you can separate regular network traffic and Double-Take Availability traffic on a machine. The default ports will be used.

Select the databases to protect. You can also select non-application specific data under the Volumes folder.

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.

Note:

You cannot un-select the databases holding the BES or MDS information. If you do not want to protect the MDS database, clear the checkbox next to Protect MDS services on the BlackBerry tab. For more information, see Configuring BlackBerry settings. 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.

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.

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.