March 2014 Update: Microsoft has released their new guide: “Planning a Lync Server 2013 Deployment on Virtual Servers” available here http://www.microsoft.com/en-us/download/details.aspx?id=41936.
This guide: “provides guidance for deploying Lync Server 2013 on virtual servers. It includes recommendations for the configuration of host servers and guest servers, key health indicators to watch during testing and deployment, . . . → Read More: 10 Basics on Lync Server Virtualization