[97454] in North American Network Operators' Group
RE: 24x7 Support Strategies
daemon@ATHENA.MIT.EDU (Farrell,Bob)
Thu Jun 14 23:14:27 2007
Date: Thu, 14 Jun 2007 23:14:22 -0400
In-Reply-To: <Pine.LNX.4.44.0706142020590.32013-100000@bawx.pilosoft.com>
From: "Farrell,Bob" <bobf@studentsonly.com>
To: "Alex Pilosov" <alex@pilosoft.com>,
"Patrick Giagnocavo" <patrick@zill.net>
Cc: <nanog@nanog.org>
Errors-To: owner-nanog@merit.edu
OK guys..... I get it...... you are not cert fans. I did mention that
when I interview candidates, the most knowledgeable gets the position.
Did I mention that I can take an engine or transmission apart, then put
it back together? ( or have it on a bench unseen and reassemble it...
just a hobby ) We got way off track here.... I'll end this thread
now.....
Enjoy !
Regards
BF
-----Original Message-----
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of
Alex Pilosov
Sent: Thursday, June 14, 2007 8:28 PM
To: Patrick Giagnocavo
Cc: nanog@nanog.org
Subject: Re: 24x7 Support Strategies
On Thu, 14 Jun 2007, Patrick Giagnocavo wrote:
> Vegetable oil can degrade much faster than diesel.
>=20
> What you really want is a large pond at the top of a hill, and another
> large pond at the bottom of the same hill.
>=20
> When utility prices are low, pump the water to the upper pond. When
> power is needed, have your installed hydropower setup allow water to
> flow through the turbine from the upper pond to the lower pond.
>=20
> In a city, a very large tank located at the top of the building and an
> equally large one in the bottom with a pipe between the two, should
> suffice. Remember that the "head" or height difference is a large
> factor in determining how much power a hydro setup can generate.
I just wanted to give a little bit more perspective on above: 1 liter of
diesel fuel contains approx 10000WH.=20
1 liter of water pumped 100 meters up has a potential energy of .272WH
It takes a *lot* of water to provide a measurable difference for a=20
datacenter of any significant size...
-alex
