Hi, I will look around tomorrow, I'm sure we have some good data. It would be nice to get some templates posted for this. I know they have a energy calculation demo they ran at the vmware booth at VMworld07. I will try to track some of that information down and post a few wiki documents tomorrow.
3.Sep 22, 2007 10:09 AM
in response to: cgautreaux
Re: Energy Savings Metrics
There was a session at VMWorld called - "Using VMware Virtual Desktop Infrastructure for Hosted Computing" which has a slide about the energy savings of in a VDI environment. I have a question about the slide about Thin Client savings. They showed $200K+ savings for 1000 desktops but the slide doesn't include any information about how long it will take to achieve these savings. Are any or the lab instructors monitoring these discussions? I would really like to know how many years it would take to achieve that level of savings.
I can look up who gave the session and send mail to them.
I requested the VMware marketing representative for Power Management repspond, but I haven't heard from therm. I will ping them again.
I use the power and cooling equations provided in the VMware Infrastructure 3 TCO Methodology.
However, there seems to be an inconsistency between the Cooling equation and their example. In the equation, they divide by the Inefficiency Constant (.25). In the example, they multiply by 1.25. ??? I multiplied by 1.25, but I'm not really sure which one is correct and haven't been able to get an answer from VMware.
I record the date when the server was excessed, use the Excel "DAYS360" function to calculate how many years (or fraction of a year) the server's been out of service. Then, multiply the yearly savings by the years out of service to get the power and cooling savings "to date".
