Backing up VMware 4.1 and 5.1 via one Backup Exec 2012 Server

I currently have a backup Exec 2012 server backing up six 4.1 VMware hosts via a vCenter server.

We will soon be installing a new VMware 5.1 environment with its own vCenter server to allow us to decommission the old hardware and create new hosts on new hardware in the 5.1 environment.

My question is can a single backup Exec 2012 server backup both environments?

Thanks 

Steve