Rick Christian  wrote:
>
> So I am investigating means to accomplish a goal...
>
> Wrangle my growing ordchard of raspberries.... :)
>
> Any way..... I am looking at what other solutions some have found for
>
> 1) Mounting Pi's in racks ie: 1-3U high rack mounts like:
>
At the risk of being crude, broomclips nicely hold Pi's in cases,
there's complete freedom to install and remove individuals without
disturbing neighboring units.

> 2) Power Supplies for the above...
>

I understand the appeal of a single DC supply, but it's also a single
point of failure. A group of wallwarts plugged into an outlet strip
with cube taps to give good packing density is cheap, compact and
easily fixable if something breaks.

Here's a photo of my (admittedly small) setup. The cables are a mess only
because I bought stock lengths:

http://www.zefox.net/~fbsd/pi_cluster

Everything is off-the-shelf, each pi is independent of every other pi.
If off-line power is wanted a standard UPS can be added.

HTH,

bob prohaska

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