Upgrading 2003 network to 208 R2 with Exchange 2010.
Have built two 2008 R2 servers as DCs.
Still have in operation a 2003 server with Exchange 2003 and a fourth machine still at Server 2003. Both are DCs.
The server now running Exchange 2003 is going away as soon as I bring up a new machine with Exchange 2010.
Function level of the domain (single forest BTW) is 2003.
Exchange 2010 installer wants the function level to be 2008. But I can't raise the functional level until the two 2003 servers are upped to 2008. I can up the non-Exchange machine from 2003 to 2008; no prob. But I don't want to (and as I understand it, can't anyway), up the Exchange machine from Server 2003 to 2008. As said already, it is going away.
Or am I mistaken about the 4th Sentence in the preceding paragraph? Can I up Server 2003 to 2008 R2 on the Exchange machine? (That it, Is it just Exchange that cannot be in-place upgraded?) If so, any particular pitfalls?
So, that's the situation, here's the question, or rather, questions:
Is my way out of this impass to make the Exchange machine (running Server 2003 and Exchange 2003) into a member server? That is, make it no longer a DC? Is DCPROMO the tool to do this? Will I still have all the functionality I have on this machine in Users and Computers for creating users and contacts, or will I have to add that back somehow?