we have a mixed Server 2008 Forest, some of the domains are 2003 R2. One of those domians is the one i control. I just got permission to upgrade our DC to Server 2008 R2 instead of Server 2008. My question is : Does the Forest need to be upgraded (specifically the schema) with the ADprep from Server 2008 R2 before i can add Server 2008 R2 DC's? I know the Forest and my Domain ran ADprep for Server 2008 but i was not sure about R2. Do we need to run ADPrep again for R2? Chris Stauffer IT Blog: http://myitforum.com/cs2/blogs/cstauffer/default.aspx

You would have to prep your forest/domain for 2008 R2. Please have a look to this article, you will find all what you need for this migration. http://blogs.dirteam.com/blogs/sanderberkouwer/archive/2010/05/26/transitioning-your-active-directory-to-windows-server-2008-r2.aspx This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.