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Replacing the PDC

By jchouse18 ·
I have been given the task of replacing our existing PDC with a new PDC. My question is what is the best way to do this with very minimal downtime. The existing PDC is hosting all of our user home directories, print server, DHCP server and WINS server. Thanks.

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Replacing the PDC

by Joseph Moore In reply to Replacing the PDC

Well, since this machine is running EVERYTHING, doing a full swap to another machine is not gonna be entirely easy.
The very first thing I suggest is do not be tempted in trying to give the new PDC the same machine name as the old one. The hastles to try and get it to work (and it never really works all that well) just ain't worth it!
Ok. Now, the easy stuff: Do the NT Server install and make the machine a BDC. Let the SAM database replicate over to it. This way, you then have all of the user and computer accounts on it. From that standpoint, you would then be safe. You could then upgrade the machine to PDC, demote the old PDC to a BDC, and that would take care of that.
Now, if you want to unplug the old PDC and totally remove it, you are gonna have to copy all files/folders from the user home directories at some point when all of your users are gone. To do this one, use XCOPY /O to copy over the files/folders/ownership & ACL info, to get your permissions saved onto the new server.
Next, you will have to recreate any shares on the new server that exist on the old one. If you share out every user directory, you will have to do that again on the new machine.
Next, go into each user account, and modify their home directory UNCpathing to read \\NEWSERVER\SHARENAME for their home directory.
Next, install the printer(s) on the new server and share out the printers.
As for the DHCP and WINS server services, their databases can be copied over from one machine to another.
Technet article Q130642 tells you how to move the DHCP database from one machine, import it to the other, and turn it on:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q130642
(please remove any spaces)
Technet article Q193820 tells you how to move the WINS database over:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q193820
(please remove any spaces)

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Replacing the PDC

by Joseph Moore In reply to Replacing the PDC

Part 2

Neither database moving process is overly difficult, just exacting. Don't mess up a step.

Lastly, after you remove the old PDC from the network, I would give the new PDC the same IP address. REboot after doing that.

So, all of thiscan be done on a Saturday with no problems, just a little planning.

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Replacing the PDC

by jchouse18 In reply to Replacing the PDC

The question was auto-closed by TechRepublic

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Replacing the PDC

by hdekken In reply to Replacing the PDC

I got this part from techrepublic itself. ;-)

this is just a simpler way to recreate your shares on your new server.

But beware: it is still the registry your toying with!!!


Windows NT 4 stores all share information in the registry. This allows you to export this information from one machine and import it to another. Just open the Registry Editor (Regedit.exe) and browse to this key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares

You'll notice all the shares listed there. Select the Export Registry File from the Registry menu and save the settings in a file. You can copy this .reg file to the destination computer and then right-click and select Merge. In order for shares to show up, you'll have to restart the machine or start and stop the server service (type Net Stop Server and then Net Start Server in the command prompt) and other services that require server service.

Be aware that this procedure will migrate all the shares from the source machine. Additionally, the folders must be located on the same drive as before. If you copied the C:\test from one machine, you have to copy the folder to the same location (C:\test) on the destination machine.

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Replacing the PDC

by jchouse18 In reply to Replacing the PDC

The question was auto-closed by TechRepublic

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Replacing the PDC

by jchouse18 In reply to Replacing the PDC

This question was auto closed due to inactivity

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