[74988] in North American Network Operators' Group
RE: Energy consumption vs % utilization?
daemon@ATHENA.MIT.EDU (Hannigan, Martin)
Tue Oct 26 16:27:32 2004
From: "Hannigan, Martin" <hannigan@verisign.com>
To: nanog@merit.edu
Date: Tue, 26 Oct 2004 16:27:05 -0400
Errors-To: owner-nanog-outgoing@merit.edu
Sure but colo's dont operate on variances of power based on CPU.
They operate on committed power to cabinet i.e. 120W per cabinet
etc. and the ability to cool a fully loaded facility.
If you had a thousand CPU's use 1W more all at the same time it's
equal to about 9.5A. 1KX2W = 20A, 1KX3W=31A, etc. etc.
--
Martin Hannigan (c) 617-388-2663
VeriSign, Inc. (w) 703-948-7018
Network Engineer IV Operations & Infrastructure
hannigan@verisign.com
> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> james edwards
> Sent: Tuesday, October 26, 2004 4:18 PM
> To: Alex Rubenstein
> Cc: nanog@merit.edu
> Subject: Re: Energy consumption vs % utilization?
>
>
>
> > Thats an insane statement.
> >
> > Are you saying, "You are only wasting money on things if you aren't
> > profitable" ?
> >
> > /action shakes head.
>
> No, I am not but my statement did sure sound like that was what I was
> saying.
> I do think it is apples or oranges comparing CPU % to total
> power used and
> coming up
> with a wasted factor. My colo needs X amps/hour just to run
> at idle, I don't
> call this waste.
> It is the cost of doing business. Power factor causes losses.
> So you need
> enough customers to cover
> this and other expenses.
>
> I guess we need a definition of waste here.
>
> I would say the the heat produced by pulling all the amp/hrs
> is waste. It
> could be possible to harvest
> this and reuse it elsewhere.
>
> So, just because you are profitable does not mean there is no
> waste but it
> also depends on how you
> classify waste. Also, do the methods to avoid this waste
> justify (pay for
> over time) their use.
>
> James H. Edwards
> Routing and Security Administrator
> At the Santa Fe Office: Internet at Cyber Mesa
> jamesh@cybermesa.com noc@cybermesa.com
> http://www.cybermesa.com/ContactCM
> (505) 795-7101
>
