Microsoft has released IPD guide for Selecting the right Virtualization Technology.
The Selecting the Right Virtualization Technology guide enables you to rapidly and accurately select which Microsoft virtualization technology or technologies to use for specific scenarios. There are several different forms of virtualization that need to be understood as a basis for making the right technology choice. This guide addresses the decision steps that need to be taken in order to select the best virtualization approach for specific application requirements. The most effective decision points in the sequence are presented for determining which virtualization technology should be used. When considering virtualization for multiple applications, you should iterate through the entire process individually for each type of application.
download of the IPD guide for Selecting the Right Virtualization Technology
In addition to this, documents on System Center Virtual Machine Manager 2008 R2 are now available.
Following documents are now available to help you to Plan, design and deploy SCVMM 2008 R2.
Download these documents from HERE
Let me know if you have any questions.