I have a grand idea that I am hoping will work out. I would like to upgrade the OS of our current Exchange Server from Server 2003 R2 x64 to Server 2008 x64. We are currently running Exchange Server 2007 SP2 on the 2003 machine. I would like to upgrade the OS as I mentioned, and then, I would like to update to Exchange Server 2007 SP3. That would then open the door to the possibility of us again upgrading the OS to Server 2008 R2.
I have successfully in-place upgraded a copy of our Exchange VHD from Server 2003 x64 to Server 2008 x64. I haven't yet tried to test run an SP3 update to the Exchange Server. I am doing this, of course, not connected to the network as it would break our email.
My question is am I trying to do something that is possible? I am going to have to do this over a weekend when our email can be offline for hours at a time. I don't want to attempt this if it is not possible. Again, we have our Exchange Server running on a VHD, so rolling back is always an easy option to do. Please advise.
Thanks in advance!