On: Project Natick – Underwater datacenter with live c...

[cm2187]

I'd assume you still need a small datacentre close to it, i.e. on the cost, for routing, backup generators, maintenance, etc.

[flyingfences → cm2187]

"Small" being the operative word. A room vs. a building.

[cm2187 → flyingfences]

Well, that depends on your definition of small. This is what I believe the diesel generators of a typical datacentre look like (+fuel tanks):

http://www.dchuddle.com/wp-content/uploads/2014/08/Backup-ge...