Adding a Domain Controller

This is just an additional one for right now but if I wanted to make it a primary later down the road do I need to run dcpromo again?
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stlhostAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
domain controllers are multi-master replication so there isn't a primary and backup as there was with NT
if you are referring to FSMO roles and moving them to the new domain controller if you plan to decommission the first one, then you can use ntdsutil to do that; not dcpromo

Using Ntdsutil.exe to transfer or seize FSMO roles to a domain controller
http://support.microsoft.com/kb/255504

you run dcpromo on the old server when FSMO roles are moved and there are no other dependencies for clients (DNS, DHCP, etc.)
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stlhostAuthor Commented:
I will be retiring a 2003 domain after 2008 is up and running so I wasn't sure if there was a particular one that acted as a primary. Thanks
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Will SzymkowskiSenior Solution ArchitectCommented:
Based on your question you simply transfer the roles. When you are transferring the roles you need to make sure that for the PDC role you have to set it up with an external time source.

Setup External Time Source for PDC
http://support.microsoft.com/kb/816042

Will.
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