Rasberry pi - high density

Mon May 11 20:52:32 UTC 2015

On Mon, May 11, 2015 at 1:37 PM, Clay Fiske <clay at bloomcounty.org> wrote:
>
>> On May 8, 2015, at 10:24 PM, charles at 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