[178735] in North American Network Operators' Group

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Re: optical gear cooling requirements

daemon@ATHENA.MIT.EDU (Rob Seastrom)
Tue Mar 3 14:51:04 2015

X-Original-To: nanog@nanog.org
To: Alex Rubenstein <alex@corp.nac.net>
From: Rob Seastrom <rs@seastrom.com>
Date: Tue, 03 Mar 2015 14:51:01 -0500
In-Reply-To: <ffbff77da4524cdeb529cda3a026fbb6@exch2013-1.hq.nac.net> (Alex
 Rubenstein's message of "Tue, 3 Mar 2015 14:27:40 +0000")
Cc: "NANOG \(nanog@nanog.org\)" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org


Alex Rubenstein <alex@corp.nac.net> writes:

> My question: have the
> optical folks woken up and made things cool front to back, or are
> they still in to the bottom to top world?

Unless something's changed, AT&T NEDS still reads "Systems exhausting
more than 50 W/sq ft must exhaust the air vertically.".

You can always put baffles above and beneath to channel the air
into/from your hot/cold aisles.  Makes it nice to be able to have the
connectors on whichever side is convenient.

-r



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