Windows 2000 Domain, Win2k/Exch2k on the DC, upgrading to Win 2003 Domain: 1 Exch 2003 Serv, 1 Windows 2003 DC Serv


I have a client who has 3 servers in their Windows 2000 Domain.  The domain controller is currently running Exchange 2000 on it.  The current server is old, and Exchange is approaching the limit, so I am replacing the single DC with two servers: one server will be a dedicated Win 2003 DC, pretty much nothing else on it maybe some file shares, the other will be an Exchange 2003 server.  

What should I upgrade first, the Domain or Exchange?  Any recommended articles?  The existing Windows 2000 DC will not be upgraded to Windows 2003, if anything it will just become a file server.  Do I have to demote that machine after the domain is upgraded to Windows 2003, can you do that with Exchange still on it?

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

You first need to run adprep on your W2K server to extend the schema to support a W2K3 server as a DC. If you get W2K3 R2, then you'll need to run the adprep off disk 2, which is a whole other topic. Simple, just hidden until you know to use disk 2.

At that point, join your W2K3 servers to the domain, promote them to be DCs, and maybe move the FSMO roles to your main one.

On your new exchange server, the install for Exch2003 into an Exch2000 organization is pretty painless. The are both pretty close underneath. Just put the CD in a walk through the wizard. If you had exchange 5.5, it is a little more involved.

Once you have Exch2003 installed, be sure to apply SP2. Since you are pushing the limits of Exch2000 right now, I'm guessing you're at the 16GB limit. There is a new default limit of 18GB in Exch2003, but with a registry key, can be set up to 75 GB.

When you are all done, you don't have to demote the old W2K server. I'd leave it as a DC just so you have another copy of the AD replica.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 2000

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.