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Adding 2008 DC to 2003 Domain -- Need to do anything to 2003 DCs?

Hi everyone,

I am looking to add a 2008 DC to my 2003 domain.  I'm using this guide: http://kendrickcoleman.com/index.php?/Tech-Blog/migrating-from-2003-to-2008-r2-domain-controller.html

The only thing I'm not sure about is, other than running adprep /forestprep, /domainprep and /domainprep /gpprep, is there anything I need to do to the existing 2003 DCs?  I have about 8 DCs total in a few different locations and I have no plan to upgrade or decommission any of them at this time.

Thanks!
Windows Server 2008Windows Server 2003
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Darius Ghassem
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Another question: I understand it used to be best practice not to give the FSMO role to a DC running in a virtual environment (VMWare) and that you would want that to go to a physical server.  Is that still the case?
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Darius Ghassem
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You can have the FSMO roles on a virtual machine that is not a problem but we do recommend that you have at least another DC that is not on the same physical server as your other DC
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@dariusq Agreed!

Another smart move is to ensure the 2003 dc is currently the PDC as well as the GC. You can change it after the 2008 DC has joined the network and set as Primary.
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I agree with Matt as well they all should be GCs as well as they should host DNS as well
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Ok another question. Our current environment all consist of windows server 2003 standard R2 Domain Controllers. All are 32 bit. Moving forward, R2 in Windows 2008 only comes in a 64 bit flavour. So I cannot use that medium to ADPrep. Is it ok to use a windows server 2008 standard NON R2 32 bit to adprep a 2003 R2 server? If not what do you recommend.

Thanks
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Ok that is great. Thanks for the reply. One more question. Moving forward. is it allowed to have a mix of windows server 2008 R2 and Standard Domain controllers or do they need to be all the same?
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Windows Server 2003
Windows Server 2003

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

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