DataFabric Manager (DFM) is the backing application and DB. This changed to Operations Manager(OM) with DFM 4.x and Oncommand Core Unified Manager(OCUM) OnCommand Unified Manager 6.x and newer(Active ...DataFabric Manager (DFM) is the backing application and DB. This changed to Operations Manager(OM) with DFM 4.x and Oncommand Core Unified Manager(OCUM) OnCommand Unified Manager 6.x and newer(Active IQ Unified Manager as of 9.6) are independent from 5.x and earlier releases. It is used to view then-current data and administer both Data ONTAP 7-Mode and Clustered Data ONTAP. For Clustered Data ONTAP systems, System Manager runs on-box for the cluster.
