So I have this idea...
I can see so many (non mission-critical) uses for Model B R-Pi units in a data centre that I want some way of shoving as many into a space as I can.
What I'm thinking of is a rackmount cage that R-Pi units can slide into... Something like this:
(please excuse terrible drawing and photograph!)
First hurdle - the R-Pi has sticky-outy bits (technical term) that mean it can't slide straight into a cage. So, there would have to be some sort of sleeve the R-Pi could clip into to give it straight edges.
Second hurdle - power. I think I'd put a Nanode (http://nanode.eu/
) into the cage which would (in conjunction with some relays) allow power to be cycled to each individual R-Pi. For niceness, a bi-colour LED shows the state of power to each device (on/off). On the basis that the release boards are similar in layout to the Alphas, power should be provided to the boards from the back of the cage - either fixed plugs, or a loose cable. Given the incredibly low power requirements, a smallish mains transformer should be able to power the entire cage and all the R-Pi units.
Third hurdle - Access to Ethernet port. Assuming that the layout of the release board is similar in layout to the Alphas and that power is provided from the back of the cage (see above), then the Ethernet port would be at the front of the cage. The cage would therefore need some (probably not very strong) retaining mechanism to ensure that cards aren't pulled out by the weight of any dangling Ethernet cables. A simple bar running the width of the cage would probably do.
Fourth hurdle - Storage. I'm thinking that my OS image would simply mount a remote NFS export, but I suppose that I could build space in to permit a drive to be attached to one of the R-Pi units in the cage...
I think that's about it.