Ask HN: How does EDIS(free RPi colo) store/rack RaspberryPis?

Hello HN, Back in October it exploded all over the web that EDIS GMBH will host your RaspberryPi for free. (http://news.ycombinator.com/item?id=4636374) Ive been fascinated by trying to figure out how they would mount/rack and connect the massive influx of RPis they got from this announcement. Does anyone know or have speculations on how they would mount/rack/hookup such a large number of small boards? Thanks, -Maze