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How to Demote the Widnows 2003 Server DC

i have Server A, B as primary and Secondary DC which have been transfered to Server C & D through FSMO rules and GC migration. Now ma old DCs A & B are shut down and i am getting Error of File Replication on Server C & D, i want to demote these old Servers A & B so that they will remain as member servers only. pls guid me how to do this and if there is any bas impect of doing so.

Thanks & Regards.

Server A was First DC
Server B was Exchange Server with AD
Server C is new First DC after migration of FSMO's from Server A.
Server D is new Exchnage Server with AD after the migration from Server B.

Errors are comming in Event Log of C & D that they dont find A  & B available for the replication.


1 Solution
Are the old machines still alive? Can you boot them back up again?

You shouldn't remove domain controllers by simply shutting them down. You need to ensure that their roles have been moved to other machines and that you have at least one global catalog domain controller.

You do know that it is best practise to put Exchange on to a member server, not a domain controller. Looking at your hardware list I would have retained one of the old machines as a domain controller so that Exchange could be a member server.

However - don't change Exchange now that you have installed it. Changing the role of the Exchange server is not supported. If it was a DC at point of installation it must stay a DC.

If the old machines are available, then simply move the roles to another machine.

Once the roles have been moved, demote the old machines to a member server by running DCPROMO and following the wizard.
Once the machine has rebooted, drop in to a workgroup if you are removing the machine totally and then power off.

If the old machines are no longer available, then you will have to seize the roles.
Then remove the remains of the old domain controller.


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