More on USN Rollback and Virtualizing Domain Controllers
Stumbled across this talk that was given in May 2011 by Dean Wells, titled Impact of Cloning and Virtualization on Active Directory Domain Services . Quite the incredible talk, and I sure wish I had seen this before I started rolling out Active Directory and got off to a false start. This is stuff every AD admin should know, and gets fairly technical at some points but is well worth the time investment to watch if you have an hour or so.