Converting asynchronous SnapMirror replication to synchronous
You can change an asynchronous volume SnapMirror relationship to replicate data synchronously by editing the snapmirror.conf file on the destination system.
About this task
Synchronous replication is not supported for qtree SnapMirror relationships. Therefore, a qtree SnapMirror relationship cannot be converted to a synchronous SnapMirror relationship.
To convert an asynchronous SnapMirror relationship to a synchronous SnapMirror relationship, on the administration host, edit the snapmirror.conf file on the destination system to change the schedule to sync.