Server Replication

I currently have a Windows NT Server PDC in place and will be adding a Windows Server 2003 Domain Controller to the network.  The NT Server will stay in place to run their software.  My question is how can I set the 2003 Server to do an initial replication with the NT Server to replicate all the users over?
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If you have an NT 4.0 domain, you can not add a Windows 2003 domain controller to this domain.  The Windows 2003 domain controller must be created in a new domain...  You can not have an NT 4.0 domain and a Windows 2003 DC in it.

You either need to create a new domain using the Windows 2003 DC.  Or upgrade your current NT 4.0 domain to Windows 2003.

You can do this a preserve your old NT 4.0 operating system by adding the new server as NT 4.0.  The promote the new server to PDC.  Then perform an inplace upgrade to Windows 2003.  In this way, you will have all of your users preserved in the domain...and you will still have your old server as NT 4.0.

Dmitri FarafontovLinux Systems AdminCommented:
Sure you can, this is accomplished with Functional Levels. When the 2003 DC is promoted it will be in mixed mode to support the NT 4.0 Domain Controllers.

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DeltaFire:  You are correct..but the original question states: "I currently have a Windows NT Server PDC in place and will be adding a Windows Server 2003 Domain Controller to the network."  You can not add a Windows 2003 domain controller to an NT 4.0 domain.  You can upgrade the NT 4.0 to Windows 2003 and still have NT 4.0 BDC's existing in it...but you can not add a Windows 2003 DC to an NT 4.0 domain.
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Dmitri FarafontovLinux Systems AdminCommented:
Sorry my mistake, I read the question again :-)
dslivingstonAuthor Commented:
So what you are telling me is that there is no easy way to do this.  Upgrading the NT Server is out of the question.  I havent worked too much with the functional levels.  DO you have any links that might be helpful?  
Install Windows NT 4.0 as a BDC of your existing domain on the NEW server. Then perform an INPLACE UPGRADE on the NEW server.  Why is upgrading out of the question?  huh..guess I don't really understand what you want....
Dmitri FarafontovLinux Systems AdminCommented:
There is a propriatory Aplication that requires NT 4.0 to be present.
OK, let me try to explain again.  I know that NT is required, and my solution will keep the original PDC in tact as NT 4.0.

1) On the NEW HARDWARE.  Yes, this is the NEW server.  Install NT 4.0 operating system as a BDC of the original domain. (You still have your PDC with the original application running on NT 4.0 PDC of the original domain)
2) Promote the new BDC server as a PDC in Server Manager (This is on the new are not touching the original NT 4.0 PDC)
3) Wait for replication to complete
4) At this point, your original PDC on old hardware has become a BDC of the orginal domain....your new hardware server is a Windows NT 4.0 PDC.  Now insert the Windows 2003 CD and choose inplace upgrade.

Your domain is now Windows 2003 AND your still have your original server as NT can still run the application.  Also, all of your user and computer account will be upgraded to Windows 2003.  This will take you about 3 hours to is very easy and straight forward.  

For more details on how to do this Microsoft supported upgrade technique, see this article:

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Windows Server 2003

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