http://blogs.technet.com/beatrice/archive/2009/05/22/sql-server-support-failover-clustering-and-virtualization.aspxOn May 19th, Microsoft has updated the Support Policy for Microsoft SQL Server products that are running in a hardware virtualization environment , which you can find at the following link: http://support.microsoft.com/kb/956893/en-us The main updateit-ITCommunityServer 2.1 SP1 (Build: 61025.2)