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Upgrading Primary DC to Windows 2003...

Ok, Here's what I would like to eventually have happen: 2 Windows 2003 Domain Controllers...

Currently I have 2 Domain controllers running windows 2000 server. (DC0 and DC1)

One of these servers is very old (DC0), so i would like to remove it from its current role once the upgrade is complete.
The other server (DC1), needs to be upgraded to Windows 2003 Server.
I have a 3rd Server with Windows 2003 Ent edition (DC2), i would like this server to function as the backup DC.

So DC1 and DC2 will be my two Domain controllers with windows 2003.

what steps should i take to make this happen with the least amount of screwups?
2 Solutions
these are instuctions on how to do a real in place upgrade from 2000 to 2003.  Once you have a DC on your domain that is 2003 you can move DCs arround just as you would in a 2000 domain.


this link will explain to you the differences between the "functional levels" of 203 domains:

I did not open the links of mikeleebrla but i would start doing an upgrade of the server that you want to keep. Then join the new server do the domain and run DCPROMO. After this I would move any FSMO role from DC0 to the other servers and run DCPROMO to make it a member server. Move any files and applications to the other servers and turn it off. Then I would raise the functinality lever to 2003 level.

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