New OCS 2007 R2 virtualization white paper

I mentioned this during my TechEd session (which, btw, will also be the topic of a TechNet webcast in August), but I forgot to link to it. There's a pretty good white paper available explaining the ins and outs of virtualizing OCS 2007 R2. In skimming it I was surprised to find that Microsoft doesn't support virtualizing the update server; I'll have a more in-depth analysis once I have a chance to read it more thoroughly.