An RVG is made up of one or more volumes in an SFW disk group. The updates that are made on the RVG on the primary host are sent to a configured secondary host. Thus, there is a corresponding RVG with a disk group of the same name and volumes with the same names. The data volumes should be the same size, but Replicator Log volume sizes can differ. Optionally, to add more redundancy, you can have multiple secondary hosts, all with the same corresponding copy of the RVG on the primary host.

An RVG within a disk group is the container for replication, so if you have multiple disk groups, you need to create a separate RVG for each disk group. It is possible to have more than one RVG in a disk group; however, the RVG cannot span across disk groups.