Server 2008 DCPromo

Good Day!

I currently have a windows 2000 Mixed network environment with all Windows Server 2003 Standard R2 SP2 Domain Controllers, However, one of my DC's are going bad with hard drive errors and I wanted to get a new server in to replace this current DC. I also learned that Microsoft is discontinuing support and updates for Server 2003 products/servers on July of 2015. My question is should I get a new server with OS 2008 on it or 2003 because I would then need to DCPromo the server to become a domain controller in my network and I don't know if windows server 2008 is compatible with the current network environment. Especially with Active Directory.

Thanks in advance,

RB
rbondsAsked:
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it_saigeDeveloperCommented:
2008 - 2012 are 100% compatible with an all 2003 domain (meaning that all DC's are Windows Server 2003 or higher).  The only stipulation is that the Forest and Domain Functional Levels are at the appropriate setting for the newer domain controllers operating system.

Understanding Active Directory Domain Services (AD DS) Functional Levels

If you introduce a new 2012 domain controller there are a couple of issues to address:

You may have to modify the component services on your 2003 DC's - http:/Q_28584877.html#a40514872

And, Kerberos authentication can fail intermittently (Microsoft has a hotfix for this issue) - http://blogs.technet.com/b/askds/archive/2014/07/23/it-turns-out-that-weird-things-can-happen-when-you-mix-windows-server-2003-and-windows-server-2012-r2-domain-controllers.aspx

-saige-
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Hypercat (Deb)Commented:
Go with Server 2008 or 2012.  You can begin your domain migration, which you'll want to do entirely at some point in the not too distant future anyway.  Here are links to information on installing a 2008 or 2012 DC in to a 2003 domain:

https://technet.microsoft.com/en-us/library/cc733027(v=ws.10).aspx
http://www.petenetlive.com/KB/Article/0000239.htm

http://blogs.technet.com/b/canitpro/archive/2013/05/05/step-by-step-adding-a-windows-server-2012-domain-controller-to-an-existing-windows-2003-network.aspx

You can certainly find additional articles by searching the web if you don't like those.
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rbondsAuthor Commented:
Currently my Domain Functional Level is Windows 2000 Mixed and the only option I have on the drop down to Raise is to Windows 2000 Native Functional Level.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
If you don't understand Domain Functional levels, you should probably hire a consultant to move you away from the ancient, unsupported technology and onto something newer.  Otherwise, you can try doing all this yourself and maybe succeed or maybe destroy your network.

That said.  Mixed Mode is used with NT4 Backup Domain Controllers.  If you don't have any BDCs, then there's no reason to be running in Mixed Mode.  If you have 2000 DCs, then they are LONG out of support and should be removed now.  If you don't have any 2000 DCs, then you can raise your domain functional level to 2003.  Once at 2003 (possibly 2003 R2, I don't recall off the top of my head) you can add a 2008/2008R2 DC without significant issue.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Put simply, the Domain Functional Level / Forest Functional Level cannot be raised above your oldest DC.
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it_saigeDeveloperCommented:
As Lee stated, it might be beneficial to bring in an outside consultant.  That being said, here is Microsoft TID that discusses upgrading from 2000 Mixed Mode to 2003:

https://support.microsoft.com/en-us/kb/322692

-saige-
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rbondsAuthor Commented:
Thank you.
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