[nickdothutton]

In the 90s I visited a datacentre in an a central London location. The providers charged for both power and space (and bandwidth). I had cause to lift one of the floor tiles to reposition a power cable slightly for the rack I was working in. What I saw stayed with me.

Stuffed under the floor of the adjacent rack were perhaps a dozen-or-so small servers, switches, the odd modem or 2, and perhaps a kvm box. The tenant had obviously exceeded his physical space but not his power allocation. He had simply "gone underground". Like a little farm of blinking LED mushrooms in the dark.