BM Seer Unofficial thoughts from an anonymous Sun employee

Power from utility and share of power to servers

Monday Dec 11, 2006

I've seen a variety of figures, anyone have completely vetted data?

Here is what I've been able to find. Note the first table slices and dices that data differently than the second two tables:

Stage Watts
Power our of utility 1000
Power lost in distribution 29
Power for HVAC 169
Power for distribution 224
Power to servers 578

Another source shows the following for a datacenter that has lots of power for infrastructure:

Use Watts
Power into Datacenter 1000
Power lost UPS 90
Power lost in HVAC (air) 160
Power lost in chiller & pumps 340
Lighting 80
Power to servers 330

Another source shows the following for a datacenter that that uses little power for infrastructure:

Use Watts
Power into Datacenter 1000
Power lost UPS 50
Power lost in HVAC (air) 50
Power lost in chiller & pumps 160
Lighting 10
Power to servers 730
...what are your figures? Any other data sources that anyone can point me to. If you have data, please add your comments.

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