I am migrating a SBS2003 server with Exchange to a 2012r2 server without exchange. We abandoned the Exchange years ago. What roles do I have to enable on the new server prior to promoting it? If I recall my last migration correctly I was able to perform the promotion to DC during the work day with no user problems. That was going from a 2000 to a 2008r2. My plan is to promote the new server to DC then transfer all the files overnight and finally demote the old server to a member server before finally removing it entirely. Does this sound like the right path? Is there anything I should consider prior to starting? Thanks in advance for any help.