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Virtualisation Energy Saving Calculator

Is there a simple calculator which works out projected energy savings of a virtualisation project, based on current physical servers, cooling and cost per unit energy?

I have looked at Green DC and VMware’s tools but they may be a little over elaborate. I need to get hold of something that will look at savings based on consolidation on site, or moving everything out to a datacentre.

Thanks
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Summerhits
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Summerhits
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Duncan MeyersCommented:
It's a pretty simple calculation: number of servers x average power consumed (250 -  350 W) x  24 hours x 365 days = total power consumed per year. Multiply that by cents per kW/h and you have the cost. Now run the same calculation for the virtualized environment ( use 20 VM's per physical server and 500W per server) and you know have power saved and $$$ saved. Greenhouse gas savings are alittle trickier because you have to find the amount of CO2 per kW/h. Easy in Australia - the Department of Sustainability has all that information in
The public domain. Obviously that varies on your country and all that.
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gheistCommented:
And one windows licence for 4 VMs


More saving in configuring desktop disks to switch off in a minute (powercfg) and adding extra ram for swapping computers.

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Duncan MeyersCommented:
Thanks! Glad I could help.
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