I just posted a new whitepaper that I have been working on for the last month or two. It was a great opportunity to test out how well Hyper-V performs with a large number of virtual machines (VMs) on a richly configured R900. You'll have to check out the whitepaper for the complete details. Here I'm going to give you a little bit of the background into how the paper was done.

I found out in early summer that we would be announcing and shipping some new 6-core Intel Xeon processors in our PowerEdge R900 server (4-socket, 4U). I was being asked what I thought would be a good way to show how well it performed for virtualization and recommended that we use Hyper-V and the Dell DVD store in a test similar to some tests that I had done in the past with ESX. At the time Hyper-V was still just a release candidate, and I was told that I wouldn't get the processors until early August. Both of these things changed—Hyper-V went officially final with an RTM build (which was great), and I ended up not getting any 6-core processors to test with until late August (which was bad because I only had one week to complete testing at that point).

I switched over to EqualLogic for the storage in this test. Previous tests had mostly been with Dell | EMC CX series storage, but I wanted to get a chance to run a heavy load against the EqualLogic iSCSI storage. It was fun to set up and test with the new arrays. I thought that setup was much easier, and I learned about setting up MPIO with the iSCSI initiator on Windows 2008.

Showing that the R900 with 24 cores was able to support 40 VMs, achieving a total of 74K DVD Store Orders per minute, wouldn't mean anything unless it was compared to something else. Using an R900 and an HP DL585 as quad-core comparison points, the testing showed an advantage in not only performance, but performance per watt as well.

So check out the full paper, and let me know if you have any questions.

Todd