[Beowulf] another crazy idea
eugen at leitl.org
Fri Sep 28 12:51:56 PDT 2012
On Fri, Sep 28, 2012 at 03:44:09PM -0400, Douglas Eadline wrote:
> Not so crazy.
> Years ago I had some L shaped pieces of steel made that allowed
> nodes to slide in horizontally as you describe (and for the same
> reasons). It provided enough of a lip to support the node
> that was attached normally on the front. Actually I still have
> them in part of my server rack (in the closet in my home office).
> Every once and a while I may need to test a node or two and
> I just slide them in, no messing with rails or anything.
This is exactly how I mount my 1U rackmounts at my cheap, ratty
colo. The hoster compensates for lack of sufficiently deep racks
by offering L-shaped Al profiles and suitable screws.
> > in the spirit of Friday, here's another, even less realistic idea:
> > let's slide 1U nodes into a rack on their sides, and forget the
> > silly, fussy, vendor-specific, not-that-cheap rail mechanism entirely.
> > how often do you actually pull out nodes, and of those few times,
> > how often do you really need the node suspended in space by the rails?
> > if I'm going to pull a node, I usually take it to a bench or cart
> > where it's more convenient/pleasant to work on. I wouldn't mind if
> > the nodes were stacked side-by-side, supported by a couple stout bars.
> > being able to shove nodes around within a stack wouldn't be bad.
> > if the metal-on-metal slide sounds aversive to you, lube it up,
> > or stick some teflon pads in there.
> > heck, it would be harder to charge $1000 for an empty rack, too.
> > nodes could still be bolted in place. there might even be some minor
> > advantages in avoiding unintended air circulation/mixing.
> > regards, mark.
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