Re: Rasberry pi - high density

[Dave Taht <dave.taht () gmail com>]

On Mon, May 11, 2015 at 1:37 PM, Clay Fiske <clay () bloomcounty org> wrote:
> > On May 8, 2015, at 10:24 PM, charles () thefnf org wrote:
> >
> > Pi dimensions:
> >
> > 3.37 l (5 front to back)
> > 2.21 w (6 wide)
> > 0.83 h
> > 25 per U (rounding down for Ethernet cable space etc) = 825 pi

The parallella board is about the same size and has interesting
properties all by itself.
In addition to ethernet it also brings out a lot of pins.

http://www.adapteva.com/parallella-board/

there are also various and sundry quad core arm boards in the same form factor.

> > Cable management and heat would probably kill this before it ever reached completion, but lol…
>
>
> This feels like it should be a Friday thread. :)
>
> If you’re really going for density:
>
> - At 0.83 inches high you could go 2x per U (depends on your mounting system and how much space it burns)
> - I’d expect you could get at least 7 wide if not 8 with the right micro-USB power connector
> - In most datacenter racks I’ve seen you could get at least 8 deep even with cable breathing room
>
> So somewhere between 7x8x2 = 112 and 8x8x2 = 128 per U. And if you get truly creative about how you stack them you 
> could probably beat that without too much effort.
>
> This doesn’t solve for cooling, but I think even at these numbers you could probably make it work with nice, tight 
> cabling.

Dip them all in a vat of oil.


-- 
Dave Täht
Open Networking needs **Open Hardware**

https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67