[36872] in North American Network Operators' Group
Re: Cooler servers for the Internet
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Mon Apr 23 12:00:02 2001
Message-Id: <200104231556.f3NFupx05431@foo-bar-baz.cc.vt.edu>
To: Sean Donelan <sean@donelan.com>
Cc: nanog@merit.edu
In-Reply-To: Your message of "Mon, 23 Apr 2001 05:39:01 PDT."
<20010423123901.14121.cpmta@c004.sfo.cp.net>
From: Valdis.Kletnieks@vt.edu
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Date: Mon, 23 Apr 2001 11:56:51 -0400
Errors-To: owner-nanog-outgoing@merit.edu
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On Mon, 23 Apr 2001 05:39:01 PDT, Sean Donelan <sean@donelan.com> said:
> I'm not very interested in who really has the coolest, most efficient
> computers. I am interested in getting accurate information for planning
> purposes. If this leads to computer vendors publishing more accurate
> information, great. I'm afraid instead, the pendulum will swing the
> other direction and vendors will begin understating their true power
> requirements.
I don't have numbers handy for the IBM boxes, but note that the p680
can go 6 to 24 CPU, and from 4G to 96G of RAM. Hardly a case where
one number will fit all. IBM at least *used* to provide power info
on a per-component basis, but you had to get the 'Site Planning and
Preparation' manual for the system in question. I also know that SGI
has information on amperage considerations for their O2K, Onyx and Onyx2
rack-mount servers, where you *can* get into the situation where you
have open slots, but be unable to put a high-draw card in because
the power supply for the cage isn't rated for it.
The only way to get "more accurate" info is to line-item each component
and add up the numbers for *your* configuration.
--
Valdis Kletnieks
Operating Systems Analyst
Virginia Tech
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