Can I have 2012R2 DC in a domain of 2003 domain functional level?

Castlewood used Ask the Experts™
Our Domain Functional Level is still on 2003. We have mixed 2008R2 and 2003 servers for DC. Recently we need to add one more DC and have been thinking if we can set up a 2012R2 server for a domain controller in a domain of 2003 domain functional level?
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Senior Network Consultant / Engineer
Minimum requirements is forest and domain 2003 functional level to add 2012 R2 so you should be good.

Get rid of those 2003 servers ASAP though!
Lee W, MVPTechnology and Business Process Advisor
Most Valuable Expert 2013
Keep in mind, forest and domain functional levels only apply to DOMAIN CONTROLLERS.  They do not apply to other servers.  So having a 2003 member server does not mean you need a 2003 DFL/FFL.
Jeremy WeisingerSenior Network Consultant / Engineer

Glad to help. :)

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