Here is our latest minicluster design.
We used the gumstix stagecoach.
It's nice, 196 Ovaros in a box. We had a number of failed attempts on
an enclosure design:
That was my first design, it was really quite compact and fun, and it
was a huge pain to assemble. It hit the basic high points however: 7
nodes per stagecoach, 7 stagecoaches per shelf, a switch per shelf
that reduced the outgoing enet cables to one. Power was a huge issue;
5V 80A per shelf, which was not fun. 10 GA wires never are.
I know at least some people on this list know Mitch Williams. He came
up with this:
It's quite elegant: self-contained shelves, with power supply,
Rigrunner for fuses,
continues the use of an 8-port switch per shelf, so each shelf has one
120V power cable and one enet cable coming out.
Plan 9 is in the works. This is a nice test and development platform
for software. We're going to make the design available in a way that
people can easily build their own.