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Trying to swap drives of Domain controller after crash - now get duplicate name exists

Posted on 2006-11-06
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Last Modified: 2010-04-13
I have a DC that crashed and I have an identical PowerEdge server that I can use so I moved drives to the new chasis and boot the box.  Boots fine but can't re enter the network, I get duplicate name exists.  (It has been about a week since this DC crashed and AD running on one DC, scary....)

I can't rename the DC so how do I get it back in domain and synching with other DC?  
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Question by:Trigon
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by:robjeeves
ID: 17883597
G'day mate

First thing I'd do is make an image of the DC that isn't broken.  I like imageforWindows.  It's supported on the server platform and will make a hot image of your DC while its running.

http://www.terabyteunlimited.com/imagew.html

You can get a 30 day trial. that will help you sleep at night until you get the other DC up and running. You can of course (and should) perform your System state backups with the C Drive but restoring this isn't as easy as reimaging should it fail.

Anyway, back to your problem. It is strange that a duplicate name exists . . . With the DC with the swapped drives turned off what happends when you ping the name of the Server (the name that is apparently a duplicate)  Does it reply or timeout?

Rob
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by:Trigon
ID: 17914850
Sorry, I have been buried.  I figured this out, it was simple when I just slowed down and looked at it.  The Poweredge I moved it to had a slightly different NIC (We had upgraded the other NIC to GB)so when I moved the drives the NIC got the IP through DHCP and not its assigned IP. I just had to assign the IP to the NIC and all started humming along.  AD was holding the name for the other NIC
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