This was more than a decade ago. Back then, the data center didn't even have public signage because Google was trying to be so secretive. Things have changed significantly since then and a lot of data is now published publicly.

Google considers pretty much everything in hwops to be a trade secret. The point is to keep the specifics unknown as much as possible from competitors; the public at large's knowledge is just collateral damage in that fight.

Yep - better off redacting the great efficiencies we’re doing.