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Upgrading Domain Controllers to 2003 R2 from R1

WelshPretender
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Last Modified: 2010-05-18
I have 6 Domain Controllers running Windows 2003 SP1, 2 in the main site the rest at remote locations.

I am looking to use the new Printer install feature that comes with 2003 R2 due to the rollout out of a completed new type of Printer in my MainHQ do I need to install R2 on all DC's for this feature to work or can I do the upgrade on just one and if I can do it on just one does this need to be the Primary Domain Controller.

Cheers
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Technology and Business Process Advisor
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Most Valuable Expert 2013
Commented:
It can't be the Primary Domain Controller - because there is no such thing.  Everything is just a domain controller.  You have 5 FSMO masters that can be on one DC (by default the first DC), but they can also be separated and put on 5 different DCs... in that case, what do you consider Primary?

When upgrading to R2, you need to run ADPrep on the second CD of the R2 set.  This prepares AD for R2 Domain Controllers.  Then you can add as many as you like.  Just remember, give some time for the changes to replicate to the other DCs... I would suggest do  the ADPREP on Day 1 and on Day 2, add the new DC.

Reference:
http://www.microsoft.com/downloads/details.aspx?familyid=5B73CF03-84DD-480F-98F9-526EC09E9BA8&displaylang=en

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Commented:
Thanks for the quick response leew.
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