This field specifies whether the replicaset is a regular replicaset or a fail-back replicaset. A regular replicaset is created on secondary site by the system when user enables replication of a volume on the primary site. A replicated-primary volume on the primary site can be demoted as a fail-back replicaset. A regular volume cannot be demoted as fail-back replicaset. Fail-back replicasets will have the volume configuration, ACL records, schedules etc before the demote, but that configuration will not be active. Fail-back replicasets can later be promoted as a replicated-primary volume when the volume is ready to resume its role.