Active Directory question

If my Active Directory DC's are 2008 R2, can I add a server that has 2008 R2 Sp1 as a domain controller?  Would I have to update the rest of the DC's to SP1 if I joined this server that is 2008 R2 SP1.
hbpubAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
If my Active Directory DC's are 2008 R2, can I add a server that has 2008 R2 Sp1 as a domain controller?
Yes you can add a DC that is 2008 R2 SP1

Would I have to update the rest of the DC's to SP1 if I joined this server that is 2008 R2 SP1

This is not required for things to work but I would be good to have all of your DC's on the same SP version.

The only thing that is a requirement when it comes to OS types with domain controllers is when your forest/domain functional level it set to a specific level.

Meaning if you have a 2008R2 Forest/domain functional level, you cannot add any other DC's into the environment that are lower than this OS version. they would need to be 2008R2 or higher.

Will.
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Dirk MareSystems Engineer (Acting IT Manager)Commented:
As Will said you can add your Win2008 R2 SP1 server as a domain controller in your current environment without any issues the forest/domain functional level is the most important note..

DirkMare
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