This video shows how to upgrade Cisco Data Center Network Manager (DCNM) to Release 10.4(2) by using the inline upgrade method. You can deploy very large scale fabrics with easily automatable capabilities that include virtual extensible LAN (VXLAN) visibility on Cisco Nexus LAN fabrics. Cisco Data Center Network Manager delivers management for Cisco Nexus 5000, 6000, 7000, and 9000 Series Switches in Cisco NX-OS mode and MDS 9000 series SAN switches.
See the full guide here: http://cs.co/9005DgLPv.
You can watch this video also at the source.