This is not so much of a blog post as a quick note to encourage all to keep a Physical DC. This was a much needed article to clarify what we know. Certainly dont use your DC as a fail over cluster node. Microsoft will no be supporting this in Server 2012. You probably don’t want your parent partition as the DC in your hyper-v box either. You can virtualize the DC in 2012 but please have a physical DC as well. Happy New year!