Microsoft launched the Server Virtualization Validation Program (SVVP), “To improve customers’ support experiences when running Windows Server on virtualization technologies other than Hyper-V™ and Virtual Server.”
Use the Support Policy Wizard at web site below to determine if your particular virtualization platform will support a chosen Microsoft application. In this quick example, we’ll determine if Windows 2008 x64 running Exchange 2007 SP1 is supported on vSphere.
http://www.windowsservercatalog.com/svvp.aspx?svvppage=svvp.htm
1. On Step 1, select the Microsoft Product and version then click Next. Again, in this case Microsoft Exchange 2007 SP1.
2. On Step 2, select the virtualization platform and guest OS then click Next.
3. On the final screen, you’ll see if your combination of virtualization platform, operating system, and application are supported.
ballblog 
As a Dell employee I think your blog on Virtualization automation is really impressive. I think Server virtualization is the masking of server resources, including the number and identity of individual physical servers, processors, and operating systems, from server users. The server administrator uses a software application to divide one physical server into multiple isolated virtual environments.