I have two Hyper-V Hosts running Server 2012 with 4 Guests on each running a mix of 2008 R2 and Server 2012. I am in a position where I need to move to Server 2012 R2 to take advantage of larger memory capacity per VM and some other functionality but don't know the best way to license the upgrade and go about the upgrade itself.
For licensing I thought if I purchase 4 Server 2012 R2 (2 each for each Physical Server) then that could cover all Hosts and Guests through virtualization rights. Is this correct?
If the above is correct, then would the smartest way to upgrade be to upgrade Hosts first with a simple in place upgrade with guests shutdown? Then after each Host is upgraded then look to scope each Guest as best makes sense? A part from in place upgrades for Server 2012, I would likely perform clean installs for any 2008 R2 to 2012 R2.
Did I miss anything?