This document outlines a series of best practice recommendations for running Lync Server 2010 in a virtualized environment.
- Windows Server 2008 R2 Hyper-V (note that Windows 2008 SP2 is not supported)
- VMWare ESX 4.0
- Others that have been validated through the SVVP program
Note: The guest OS must be Windows Server 2008 R2
Scale Comparison Table
Read the whitepaper for all the details.