Applies to ONTAP 9 Active/Optimized (AO) Description The AO path changed after a volume or LUN was moved. ONTAP sends ALUA notifications to the SAN host from both Node1 and Node2 with the same informa...Applies to ONTAP 9 Active/Optimized (AO) Description The AO path changed after a volume or LUN was moved. ONTAP sends ALUA notifications to the SAN host from both Node1 and Node2 with the same information.