Windows domain controllers

Can you have different editions of the same OS as domain controllers in the same domain?  Will it cause any issues? For example, can you have a Windows Server 32 bit Standard domain controller in the same domain as a Windows Server 64 bit Enterprise domain controller?
smaraghAsked:
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Radhakrishnan RSenior Technical LeadCommented:
Hi,

Yes, you can have different type of server OS as DC's in the network, there won't be any issues.
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Seth SimmonsSr. Systems AdministratorCommented:
can you have a Windows Server 32 bit Standard domain controller in the same domain as a Windows Server 64 bit Enterprise domain controller?

yes; it is not dependent on architecture
the shared info is in the AD database; 32bit vs. 64bit only applies to the application binaries
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it_saigeDeveloperCommented:
The only other consideration are the Domain and Forest Functional Levels:

Understanding Active Directory Domain Services (AD DS) Functional Levels

Where the minimum domain and forest functional levels are supported by *all* of the domain controllers.

-saige-
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qlockSystems AdministratorCommented:
As Saige said and linked, you just need to make sure you don't put a 2003 DC together with a 2008 DC (or similar), they will work, but AD will not run in 2008 mode.
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DrDave242Commented:
you just need to make sure you don't put a 2003 DC together with a 2008 DC (or similar)
This is a little misleading. There's nothing wrong with having a 2003 DC and a 2008 DC in the same domain/forest, as long as the domain/forest functional level is set to 2003 or earlier. (Basically, the functional level defines the earliest version of the OS you can have on a DC.)
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qlockSystems AdministratorCommented:
I concur with DrDave242, poor wording on my part... His summary was what I was fumbling to get out. :)
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LearnctxEngineerCommented:
My DMZ domain currently consists of:

2 2012 R2 DC's
5 2008 R2 DC
1 2003 R2 DC (required for backward comparability for 1 application)

No problems. There is 1 potential issue with having 2003 and 2012 DC's in the same domain where they do not play nicely. But Microsoft has released a patch for that so make sure you're fully patched.
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Windows Server 2003

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