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Replacing Windows 2003 Domain controller

Posted on 2007-08-06
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I need to replace an aged system that happens to be a domain controller with a new piece of equipment.  I intend on keeping the same name and IP info on the new system.  The system that is being replaced does not have any of the FSMO roles assigned to it.  (I believe this is the correct term)My thought was to simply shutdown the old domain controller, remove it from the domain in Users and Computers and bring the new box online and running a DCPROMO to add this system to the network.  Simple enough?  I was reading through some other comments that made think that maybe it wasn't this simple and that I needed to do some other cleanup work before adding the new system to the domain.  Appreciate any insight.
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Question by:K-Leininger_admin
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Yancey Landrum earned 500 total points
ID: 19638423
First of all, don't keep the same machine name and IP information as the old server; you are just asking for trouble. You will find your self cleaning up AD manually with an ldap tool. Your machines will find the new server just fine with a new name and IP address. Here's how I would do it:

1. Set up the new server with its own name and IP.

2. Run DCPROMO on the new server to promote it to a DC. Wait for or force replication.

3. Run DCPROMO on the old server to demote it back to a member server. Wait for or force Ad replication before decommissioning the old server.

The only thing to watch out for (and it is not that big a deal) is if the old server is a global catalog server. If it is, and you are using Exchange 2000 or higher, some of your people will have Outlook problems for a while until:

a: Their GC info is replicated to another GC
b: Their Outlook finds the new GC
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by:ocon827679
ID: 19638480
Agree, remove the old DC properly by using dcpromo.  If it was a GC and you are adding a new dc, then ensure the new dc is also a GC.  Use AD Sites and Services to configure the DC as a GC (its a chackbox in the server or ntds properties.  (I can never remember which!)

If you just take it off the network, then search at support.microsoft.com for "metadata cleanup" to ensure that AD removes all references to the server as a domain controller.  
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