[145242] in North American Network Operators' Group
Re: facebook spying on us?
daemon@ATHENA.MIT.EDU (Jay Ashworth)
Sun Oct 2 01:19:16 2011
Date: Sun, 2 Oct 2011 01:16:34 -0400 (EDT)
From: Jay Ashworth <jra@baylink.com>
To: NANOG <nanog@nanog.org>
In-Reply-To: <E36EB8E60B5EB244AAFCFEF0AF0A116D02FE359A62@MS-EX7MB-P03.corp.se.sempra.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
----- Original Message -----
> From: "Barry Jones" <BEJones@semprautilities.com>
> I can't tell you the kind of servers, but I can say that I was
> recently in Prineville, OR, where FB is building a data center (and a
> second data center). I was used to the ol data centers - you know,
> where there's raised floors, cabinets, cool air, a guard and a few
> guys around with some screens?
Data Center Knowledge posted about 20 minutes of very poorly shot video
of Prineville. They're Open Compute servers in 'triplet' racks.
> But this was massive. I was amazed at the size - a few city blocks
> long and a city block wide, with a transformer and power line the size
> of a small city. I wonder if the Feds were involved.
Their power supply (also open) runs across 2 legs of a 277/480 3-phase feed,
which is usually what the substation supplies to your PDUs, which step it
down further to 120/208. It also takes -48, and each pair of triplets has
a 48V float string that will run the 180 servers for about 45 seconds.
It's a nice setup. I plan to steal it. :-)
(The substation input voltage is very often 13k2 to 13k8, though it can be
even higher.)
Cheers,
-- jra
--
Jay R. Ashworth Baylink jra@baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
