[Beowulf] flange clearance on sliding rails
Maurice Hilarius
maurice at harddata.com
Wed Oct 19 20:35:33 PDT 2005
David Mathog wrote:
>From: "David Mathog" <mathog at mendel.bio.caltech.edu>
>Subject: [Beowulf] flange clearance on sliding rails
>To: beowulf at beowulf.org
>Message-ID: <E1ESN7s-0002xn-00 at mendel.bio.caltech.edu>
>Content-Type: text/plain; charset=iso-8859-1
>
>We have two racks in the machine room. They are both generic
>(ie, not from a major manufacturer like Dell, Sun, or IBM.)
>Neither one of them will hold a set of sliding rails properly.
>
>..
>The other rack, from another group, has the same problem on one
>side. For that one (square holes with the little clamp in nuts)
>there's absolutely nothing to adjust. What's most infuriating about
>this case is that there's almost 2 inches of free space on the other
>side, all they had to do was to make the narrower rail a tiny bit
>wider, and the wider one a tiny bit narrower.
>
>In both cases the mounting flanges are only about 2 mm too wide.
>I've seen this now with rails from two different sources.
>
>Is this a common problem?
>...
>
>
>
Getting the actual EIA spec (officially) is quite expensive.
Fortunately you CAN find a copy of it here:
http://support.enlightcorp.com.tw/ftp/Technology/SSI-Spec/server_rack_spec_v1_1.pdf
I think that will show you if the suppliers met the specs or not.
Good luck!
BTW, regarding your comment:
"ie, not from a major manufacturer like Dell, Sun, or IBM"
We have seen these companies routinely break this spec.
Dell are especially frequent in that practice.
"Standards? We don't need no steenking standards!"
--
With our best regards,
Maurice W. Hilarius Telephone: 01-780-456-9771
Hard Data Ltd. FAX: 01-780-456-9772
11060 - 166 Avenue email:maurice at harddata.com
Edmonton, AB, Canada http://www.harddata.com/
T5X 1Y3
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