I have 2 office locations and each is a Site. Site1 (10.0.0.0) has DC and Exchange Server. Site2(10.0.1.0) is just a DC. The company will be consolidating back to one location (Site1). They would like to reuse the DC in Site2 for another purpose that does not support running on a DC so it must be demoted.
My question is in what order should a perform the tasks.
Should I physically move the server to Site1 before changing its subnet or change subnet before moving?
Should I demote it before doing physical move or subnet change or demote atfer move and subnet change?
Is there a KB with recommended steps for this?