Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

Consistency group operations overview

SRDF consistency preserves the dependent-write consistency of devices within a group by monitoring data propagation from source devices to their corresponding target devices. If a source R1 device in the consistency group cannot propagate data to its corresponding R2 device, SRDF consistency suspends data propagation from all the R1 devices in the group.

SRDF consistency allows rapid recovery from certain types of failures or physical disasters by retaining a consistent, DBMS-restartable copy of your database.

SRDF consistency group protection is available for SRDF/S and SRDF/A.

An SRDF consistency group is a composite group comprised of SRDF devices with consistency enabled.

The devices in the consistency group are configured to act in unison to maintain the integrity of a database when distributed across multiple arrays or across multiple devices within an array.

Domino mode also ensures consistency of a remote database.