Description: This object identifies the action how to operate the replica. When read , a value of 'none' will be get. The value of 'promte' means remove the replication relation and promote the remote copy on the target server. The value of 'sync' means synchronize mannually (force a replication that is not scheduled.) The value of 'scan' means scan the delta data between primary resource and replica resource. The value of 'reversal' means switch the roles of the primary resource and replica resource. The replication configuration is maintained. The primary and replica must be synchronized in order to reverse a replica. The value of 'stop' means stop a replication that is currently in progress. The value of 'suspend' means suspend future replications from automatically being triggered by replication policies (watermark, interval, time). This will not stop a replication that is currently in progress. The value of 'resume' means resume the replication status from suspended to normal. Note that if the action of 'upgrade' is executed successfully, this replica resource will become a normal logic volume, and this entry will be deleted automatically. Note that if the action of 'reversal' is executed successfully, Clients will be disconnected from the former primary resource.