OT: CRAC

[Jerry Feldman]

On Fri, 4 Nov 2005 02:00:35 -0500
Bill McGonigle <bill at bfccomputing.com> wrote:

> Now, the question: what really works?  Who's in a big colo that uses 
> passive cooling?  Who has a Liebert in a small computer room?  Who just 
> cut a hole in the wall and put in a $79 AC from the warehouse club?
> 
> Any horror or success stories to share?
Years ago I was working at Raytheon Data Systems. One of our clients in
Dallas, Texas had their computer crash periodically.  The local guys
couldn't figure it out, and the local SE actually told the client "let
me pray with you". <<-- This is TRUE.
They flew me down because even though I could prove it was not software
no one believed me. They flew a technician in from Atlanta, and as I
walked in the door, he yelled "I found the problem". There was a loose
connector on the backplane. There was an air conditioner in the room (a
closet). Most of the time when the compressor would start, it would
cause enough vibration for the 2 pins to touch and the system would go
into a halt state. 

We have some brand new big Liebart systems in our lab, but we generate
many BTUs.
-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix user group
http://www.blu.org PGP key id:C5061EA9
PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9
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