DataKeeper allows the user to choose the compression level associated with each mirror.  Enabling compression can result in improved replication performance, especially across slower networks.  A compression level setting of 3-5 represents a good balance between CPU usage and network efficiency based on the system, network and workload.

Note:  The compression level of a mirror can be changed after the mirror is created.  See the topic "Changing the Compression Level of an Existing Mirror".