I currenlty run an Exchange Server 2007, the physical server is not that great at the moment and I am running out of disk space. So I am thinking about creating another Exchange server 2007 server as a virtual machine and migrating all my users.
However my current Exchange server is behind is updates and rollups. I don't want to run these currently due to limited disk space. Hence a new server.
Would both servers require that they are both updated to Rollup 10 etc or can they be in different states?