Physical questions

Jim Lux James.P.Lux at
Mon Jan 13 16:01:19 PST 2003

Several rack hardware manufacturers make shelves that have EIA spaced ears 
on the front.  It's just a single piece of sheet metal with 4 bends, and a 
few punches.  If you're getting more than a dozen or so, a local sheet 
metal fabrication place could probably make a bunch for you, and put in all 
the mounting holes you'll need for the mobo, etc.

Check the companies supplying stuff to the music industry. (I seem to 
recall a company called Middle Atlantic Products that does all sorts of 
these folded and punched things) In single unit quantities, they'll 
probably be around $50-60...

At 11:42 AM 1/13/2003 -0800, Paul English wrote:

>We are looking at building a second cluster and I have some physical
>installation questions.
>When I was at NASA goddard, I got a look at one of the Beowulf clusters
>there which had nodes which were just motherboards mounted on rails or a
>shelf which sat in the rack. Seems great to me to avoid purchasing a case
>if it isn't really needed - does anyone know any vendors for this sort of
>a mounting solution?  I found this one, but it looks like it includes the
>motherboards and the rack, while I'd like to just buy the shelves:
>I'd rather not fab my own, although I suppose that is an option.
>For the above setup, it seems ideal if it could use just one big power
>supply for the whole cabinet - are there any vendors for something like
>this? Ideally if it could be a UPS also to provide brown-out power that
>would be helpful, otherwise I'd have to sacrifice more rack slots to a
>Fortunately (and with a lot of help) I've pretty much got hardware and
>software built and tweaked pretty well for my needs now, so what I need
>to do for more power is - buy more!
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