Where do I download white papers about SharePoint Virtualization? You can download all the white papers from Microsoft site for SharePoint Virtualization
How to virtualize SharePoint Server 2010/2007 in Hyper-V?
Microsoft Virtualization: Best Choice for SharePoint Server
Microsoft Virtualization technologies – Windows Server 2008 R2 Hyper-V and System Center – provide SharePoint architects with a flexible toolset that can be used to reduce hardware and energy costs, increase the performance of SharePoint farms, and provide a level of design and management flexibility that is not possible with traditional physical deployment approaches.