RDR provides the following functions:

	Replicate data in various modes Synchronous, semi-synchronous (asynchronous, all data sent), and background-copy (asynchronous, deltas only sent) modes supported. Change the replication mode non-disruptively.
	Multiple replicas Create multiple replicas of the same original simultaneously, in the same or multiple arrays.
	Multi-hop replication Create a replicas of the same original in multiple arrays in a cascading manner
	Disconnect replicas from original volumes Disconnect volumes at any time to pause synchronization, enabling access to the replica.
	Re-synchronize volumes Reconnecting volumes after separation will re-synchronize the replica to the original volume by only copying the differences.
	Access the original volume when restoring from a remote volume Allow files to be accessed even while restoring from a replica. You can decide whether or not to update the replica with the new/changed data.
	Return to normal operations faster After failover to a replica (e.g. in a DR scenario), only the updated data needs to be sent to the original volume to restore normal operation, rather than restoring the entire replica volume.