What is the best way to switch domain controllers for a short time?

Posted on 2012-08-22
Last Modified: 2012-08-22
I have a Server 2003 domain with several domain controllers, all of which are also global catalog servers.  I have one domain controller (named DC1) that has all the fsmo roles.

I need to take DC1 offline for several hours and I want to do so with as little impact to the network as possible.  

All workstations and servers on the network are pointing to the ip address of DC1 for their primary dns and wins server.

The Exchange 2010 server is using DC1 as its catalog server.

What if I take some other domain controller, say DC3, which also is a dns and wins server on the network, and transfer all the fsmo roles to that server, and then shutdown DC1 and then change the ip address of DC3 to the address that DC1 had?

Also, before shutting down DC1 I will change start of authority in dns to DC3 so I can make dns changes while DC1 is unavailable.

Is this going to work for a smooth temporary transition?

Question by:gateguard
    LVL 95

    Accepted Solution

    So as I understand it, you have a domain with more than one domain controller, correct?

    Your clients list DC1 as primary DNS and they DO HAVE secondary DNS entries pointing to other DCs, right?

    Then do NOTHING.  Except MAYBE, if you only have one global catalog server, create another.  Other than that, Active Directory was DESIGNED to allow servers to be taken off line for extended periods.  In theory, you could take that server down for a month (assuming default settings) and not notice it EXCEPT for a few minutes as Exchange needs to find a new global catalog server.
    LVL 95

    Expert Comment

    by:Lee W, MVP
    By the way, you really shouldn't need WINS unless you have some specific application that requires it...

    Author Closing Comment


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