You must back up a VirtualCenter system to ensure that you can restore your previous configuration of VirtualCenter if the upgrade does not complete successfully. The only way to recover from an unsuccessful upgrade is to use your backed up database and SSL certificates.

You cannot roll back your database to the previous database schema.


Make a full backup of the VirtualCenter 2.5 Update 6 or higher database.

See your database documentation.


Back up the VirtualCenter 2.5 Update 6 or higher SSL certificates.


Copy the SSL certificate folder under %ALLUSERSPROFILE%\Application Data\VMware\VMware VirtualCenter.


Paste it at the backup location.


Take notes on the existing VirtualCenter installation regarding the selections, settings, and information used.

For example, note any nondefault settings, such as the IP address, the database DSN, user name, password, and assigned ports.


Create a backup copy of vpxd.cfg.

Continue with the upgrade to vCenter Server.