Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

SRDF consistency group operations

SRDF composite groups are initially created using the symcg create command. Once they are created, they are populated with devices and device groups.

In order to be enabled as an SRDF consistency group, the composite group must be:

• Defined as a type RDF1, RDF2, or RDF21
• Have consistency enabled using the option -rdf_consistency.

symrdf control operations can change a composite group. For example, a device personality swap operation can change an RDF1 CG to an RDF2 CG. SRDF control operations (failover -establish and swap operations) cannot change the type of an ANY composite group but can affect the devices in that CG.

Dell Solutions Enabler SRDF Family State Tables Guide provides a list of control actions and the required SRDF pair states for consistency group operations.