Appendix G: Upgrade Checklists : Phase 2
   
Phase 2
Upgrade vCenter Server
Verify operating system, database, and other component compatibility with target vCenter version.
Perform backup of vCenter Server configuration files.
Back up vCenter database using a method appropriate for configured databases.
Disable the vCenter server within the vCloud Director system portal.
Perform upgrade installation of vCenter Server.
Enable the vCenter server in vCloud Director system portal.
Install VMware Update Manager and register with vCenter Server.