Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

SRDF/Automated Replication overview

SRDF/Automated Replication (SRDF/AR) provides a long-distance disaster restart solution. SRDF/AR can operate:

• In two-site topologies that use SRDF/DM in combination with TimeFinder.
• In three-site topologies that use a combination of SRDF/S, SRDF/DM, and TimeFinder.

  Three-site topologies operate in synchronous mode in the first hop and in adaptive copy mode in the second hop.

  NOTE:

  Multi-hop SRDF/AR requires Enginuity version 5876.159.102 or higher.

SRDF/AR provides automated consistent replication of data from standard devices and RDF1 BCV devices over SRDF links to remote SRDF pairs.

SRDF/AR is invoked using the symreplicate command.

• symreplicate supports single-hop and multi-hop SRDF configurations.
• You can start, stop, or restart a symreplicate session without degrading the data copy.
• You can set up a concurrent BCV to have access to an independent copy of the replicating data during a symreplicate session.

By default, the symreplicate replication process is performed in the background.