Re: Database design.

[Drsolly <drsollyp () drsolly com>]

On Tue, 6 Jun 2006 Valdis.Kletnieks () vt edu wrote:

> On Tue, 06 Jun 2006 22:47:33 BST, Drsolly said:
>
> > 400 computers at 100 watts per computer, would need 40 kw. Space 
> > requirement - you could put it in a double garage. Aircon requirements 
> > wouldn't be too bad, you could probably go with 20 kw to augment the 
> > natural cooling. 
>
> Hmm... I got a cluster of 1100 Mac G5 systems across the hall.  Our
> facilities people would certainly love it if they only took 100 watts
> per computer.  Apple cites 400 watts per server.  And I think a Xeon
> processor is 110 watts *all by itself*, not counting the optional stuff
> like memory and disk.

I'm talking about a Celeron 2.4, 512mb, four hard drives. The figure comes 
from an actual measurement of the power consumed while the conputer is 
actively in use. I needed to know this, so that I could plan a data 
center, so I put a clamp wattmeter on a server.

Maybe macs use more, I don't know. You might put a clamp meter on one. And 
there's no point in using Xeons on a server that's mostly acting as a data 
store. 

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