Power consumption database

61180 pts.
power consumption
Posted on behalf of pwilliams80: Does anybody know of a resource providing power consumption figures for all servers? (HP/Sun etc). We are trying to do some analysis on servers in our data centres to see how much power we are saving by moving from a physical to virtual environment. If we know the Manufacturer and Model of the source servers, numbers to be decommissioned and tie this to a database with the manufacturers data, we can establish theoretical power savings. Any help would be much appreciated. I know of one product (Rackwise Data Centre Manager) but this is a whole software package with many features which simply aren't relevant. We just want a database for server specifications. Thanks in advance.

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Sorry, but there are really too many variables for such an analysis. Disk useage, APCI settings, ambient air temperature affecting fan speeds, number and type of disk drives, and on and on… For a loosey-goosey answer, you can look at the server specs in the user manual and come up with a rough idea of typical power consumption. You’ll also see incidental power savings in reduced load on the air conditioners, by the way…

APC has an online calculator that is used for load management on their UPS systems. Take a look and see if it can provide some numbers for you

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  • Bikecommutr
    The best way to do this is empirically. Buy a power monitor and sample some racks. See what the actual draw is over a week. Assuming a good sample, you can extrapolate to the rest of the data center fairly accurately. At worst, look at each power supply in the devices and add up peak/average load. Remember the formula watts = amps * voltage and it all becomes easier.
    80 pointsBadges:
  • Brycenesbitt
    Looking at the vendor specifications is essentially useless. Go out and get a Kill-A-Watt P4400 , and plug it in. The only downside is unless you have redundant supplies, you have to unplug first. For examples of how far off "specified" and "measured" power usage is, see my switch power consumption page at
  • Brycenesbitt
    At: http://www.obviously.com/tech_tips/Switch_Power_Consumption www.obviously.com/tech_tips/Switch_Power_Consumption
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