Hello,
I am running a windows server 2008 r2 environment with 3 domain controllers. I have my primary domain controller which runs DHCP, DNS, GC and all that good stuff. I want to upgrade to windows server 2012 r2. My questions is which of the domain controllers should I upgrade first or does it even matter? and should I raise the forest and domain functional level after the upgrade?
Should I consider migration? I am running in a vm environment and I don't have any issues with my AD forest.
thanks