Re:Disclaimer: I am Not an Electrical Engineer (Score 1)

Google has engineers whose primary job is to figure out how much power and cooling they can get in a rack.

Yes. Google are unusually well-educated consumers. I imagine they're a dream for a data centre to work with.

The big issue that colo centers are not dealing with is security between customers --- one customer taking down another customer's equipment. It's much easier than you might imagine.

Oh, believe me, I can imagine. Part of my job is to help people understand that this is one of the many things that differentiates us from most data centres. I think we're on the same page. :)

(I don't work for Internap, obviously.)