HP Sizer for Microsoft SharePoint is a complimentary planning resource that encapsulates knowledge gained from extensive performance characterization of Office SharePoint Server 2007 and SharePoint 2010 in the HP Alliances Performance and Solutions labs, widespread collaboration between HP and Microsoft, and numerous SharePoint performance whitepapers produced by HP engineering.
A new feature of this sizer is to configure the server requirements for a highly available Hyper-v R2 environment.
Get it from http://h71019.www7.hp.com/activeanswers/Secure/548230-0-0-0-121.html