I have exchanged a couple of emails with Chris Merrill (the person who did the test). He confirmed that SQL Server was used as the backend for the ASP.NET Issue Tracker System (the app they were testing) and that SQL Server was virtualized too (I am not sure which version and which edition of SQL Server they were using).
My experience have been that database servers do not virtualize well, at least not the ones under any kind of decent load. Unless we are talking really small or very mildly used web apps, you do not normally put web tier and database tier on the same box (at least not in the Microsoft world). It would be very interesting to see the results with SQL Server removed from the equation (running on another server).
Slashdot Mirror
I have exchanged a couple of emails with Chris Merrill (the person who did the test). He confirmed that SQL Server was used as the backend for the ASP.NET Issue Tracker System (the app they were testing) and that SQL Server was virtualized too (I am not sure which version and which edition of SQL Server they were using). My experience have been that database servers do not virtualize well, at least not the ones under any kind of decent load. Unless we are talking really small or very mildly used web apps, you do not normally put web tier and database tier on the same box (at least not in the Microsoft world). It would be very interesting to see the results with SQL Server removed from the equation (running on another server).