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How can I tell what DCs perform what roles?

In a large enterprise, how do I find out what DCs perform what roles -- i.e, the name of the GC and how many there are, etc?
The DCDIAG.exe from the support tools will tell you. Also, the NTDSUTIL.exe from the support tools or resource kit will provide this information. There is a Microsoft article on how to find servers that hold the flexible single master operations roles. There are a number of ways -- the quickest is to use NTDSUTIL or the script in the resource kit that uses NTDSUTIL.exe.
This was last published in August 2003

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