After you have promoted the backup group leader to group leader, you can set up
synchronous replication on it.
NOTE: Make sure the upstream and downstream replication partners share
a common snapshot.
Make sure the arrays are in-sync by entering the group
--status command.
When the arrays are in-sync, you can modify the volume
collection and configure synchronous replication.
Set the upstream volume to offline:
The steps to remove synchronous replication (see ) disassociate the downstream volume,
which allows it to become available to host. However, the upstream volume
remains unavailable.
When the arrays are in-sync again, you can move the upstream volume to
offline by entering the following command:
Set up synchronous replication between the two replication partners by entering
the following commands to edit the schedule and set the replication
direction:
Check the values for Synchronous Replication State and Synchronous Replication
Last. They should be in_sync and now
respectively:
Synchronous Replication State: in_sync
Synchronous Replication Last In Sync: now
You should perform a handover operation to return the original replication
direction. For information about handovers, see Handover Overview. For
the steps to perform a handover, see Perform a Handover.