A SnapMirror license is required on both the source and destination clusters, with limited exceptions as defined below. A SnapVault license is not required if a SnapMirror license is already installed.
Starting with ONTAP 9.4, a new DP_Optimized (DPO) license is available that supports an increased number of volumes and peer relationships. A SnapMirror license is still required on both the source and destination.
Starting with ONTAP 9.5, SnapMirror Synchronous relationships are supported. You require the following licenses for creating a SnapMirror Synchronous relationship:
The SnapMirror Synchronous license is required on the source cluster.
The SnapMirror license is required on both the source cluster and the destination cluster.