[98245] in North American Network Operators' Group

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RE: Why do we use facilities with EPO's?

daemon@ATHENA.MIT.EDU (Barry Shein)
Thu Jul 26 17:20:24 2007

From: Barry Shein <bzs@world.std.com>
Date: Thu, 26 Jul 2007 17:05:36 -0400
To: nanog@merit.edu
In-Reply-To: <046801c7cfc3$19d26660$3301a8c0@D3M1BS91>
Errors-To: owner-nanog@merit.edu



On July 26, 2007 at 16:25 repstein@chello.at (Randy Epstein) wrote:
 > (snip)
 > 
 > > Put another way: Between a 120KVA UPS and a gang of experienced
 > > firefighters with charged hoses I'd put my money on the firefighters
 > > every time.
 > > 
 > > --
 > >         -Barry Shein
 > 
 > You realize the UPS systems we're speaking of are much larger?  Usually 480
 > volt, many kVA.

FWIW, do you imagine that's terribly large for urban firefighters in
the big scheme of things, not just computer rooms?

My memory could be wrong but I remember the John Hancock building, 60
stories, pulls about 1.5MW...I remember Boston Edison mentioning this
in discussing a design I was working on of a supercomputer facility,
that we were asking for more power than the hancock building which was
ok but it presented..."challenges". Factories can pull a lot of power
also (that room was never built.)

Anyhow, once you're beyond a pea-shooter I don't think procedures for
firefighting vary a whole lot, other than some outliers.

	-b


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