# Validating Configuration for SRDF Replication

Configure Synchronous or Asynchronous SRDF Replication using the Dell EMC SRDF documentation.

To verify Symmetrix Remote Data Facility (SRDF) for Replication, run the following command and check if source device is listed and pair state is shown as ‘Synchronized’ for Synchronous replication and ‘Consistent’ for Asynchronous replication.

    #symrdf -sid  $[symmetrix_id]  list

## Enable Device-Level Write Pacing for SRDF Asynchronous Mode

SRDF/A write pacing extends the availability of SRDF/A by preventing conditions that result in cache overflow on both the R1 and R2 sides.

    #symrdf -sid $[symmetrix_id] -rdfg $[rdfg_id] activate -rdfa_devpace

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