Replacing DC

I Currently have two domain controllers running Windows2003 server.  I need to replace one can I replace it with W2003 R2?
aardmancgiAsked:
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LauraEHunterMVPCommented:
You will need to extend your existing Active Directory schema with the schema updates that come with R2. This involves running the version of 'adprep' that's found on disc 2 of the R2 media.

The steps needed to extend the schema can be found here: http://technet2.microsoft.com/WindowsServer/en/library/ed42abd5-24c7-4b5a-8165-dbd96727ec841033.mspx?mfr=true

For the most part I've found that the R2 schema extensions are fairly painless - the only major issue I've experienced was with a customer who had installed a very old version of Microsoft Services For Unix which created a schema conflict, but even that was repairable with some work in the Schema Admin MMC.

Hope this helps.

Laura E. Hunter - Microsoft MVP: Windows Server - Networking
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Brian PiercePhotographerCommented:
Yes. Just install Win2003R2 as a member server on the domain and then promote it to be a domain controller. Before you decommission the other domain controller use the ntdsutil tool to see it it holds and FSMO roles and if it does use the same utility to transfer the roles.

If the machine to be removed is being used as the Preferred DNS server for clients you will need to change the clients to use one of the alternative Machines, equally if it is hosting DHCP you will need to move that service as well.
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Brian PiercePhotographerCommented:
The use of the NTDSUtil utility is described at http://support.microsoft.com/kb/324801

Once you have the new DC up and running then you can demote the old DC to a member server and then remove it from the domain.
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aardmancgiAuthor Commented:
how do you move DHCP services
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Rick HobbsRETIREDCommented:
To move a DHCP server, follow the steps here:
http://support.microsoft.com/kb/325473
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Computer101Commented:
Forced accept.

Computer101
EE Admin
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Windows Server 2003

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