Windows Server 2003 AD Upgrade to Windows Server 2008 AD

I presently have 2 DC's with Windows Server 2003 and 1 DC with Windows Server 2003 64Bit in my domain. I want to upgrade to Windows Server 2008 64Bit. Also one of the Windows Server 2003 DC will be demoted and new server will be used as a DC. Should I install this new DC server with Windows Server 2003 64Bit an upgrade or can would it be better to install Windows Server 2008 64Bit and promote to a DC and then do an upgrade to the existing Windows Server 2003 DC's??????? What are best practices??
CBBNet AdminAsked:
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Mike KlineCommented:
I'd start fresh with the new server instead of an upgrade in place.  The other thing I'd definitely recommend is going to 2008 R2 at this point (so you don't have to do it down the road)

I have some step by steps in this question (with some good links)

http://www.experts-exchange.com/Software/Server_Software/File_Servers/Active_Directory/Q_26488412.html

You start with prepping your forest/domain (explained in the links) and go from there




Thanks

Mike
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CBBNet AdminAuthor Commented:
Mkline71,

Yes, I'll be going with Windows Server 2008 R2 and that's what I had in mind to start from fresh.

Thanks,
Lando
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Mike KlineCommented:
Outstanding!!   Let me know if you have any questions once you go through those links.
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Darius GhassemCommented:
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CBBNet AdminAuthor Commented:
Will there be any issues with the new Windows Server 2008 R2 DC and a W2K3 Server with Exchange 2003 SP2???
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Darius GhassemCommented:
No.
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Mike KlineCommented:
I was talking to a good friend of mine who is a PFE for Microsoft and he told me about a 2008/R2 blog posting that I usually don't include but looking at it the guy did a great job.   So I wanted to post it here (I'll post it in future answers too)


http://blogs.technet.com/b/glennl/archive/2009/08/21/w2k3-to-w2k8-active-directory-upgrade-considerations.aspx

...thanks Eric for the link (not likely he will even see that but just in case)

Darius is right as usual, exchange matrix is something you will want to save  http://technet.microsoft.com/en-us/library/ff728623.aspx

Thanks

mike
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