Just had a chance to read this--thanks. From the average, the data center guys I'm talking to aren't wrong in a heuristic sense--just inefficient: "According

Just had a chance to read this--thanks. From the average, the data center guys I'm talking to aren't wrong in a heuristic sense--just inefficient: "According to the Uptime Institute's 2014 Data Center Survey, the global average (PUE) of respondents' largest data centers is around 1.7." From what I recall, Google does AC-to-DC outside of the cooled area, and has their own custom approach to UPS. The article adds that they leave the cool aisle at a toasty 80F+, and make use of free cooling techniques. Most non-FAANG data centers are using stock Dell/HP/Cisco servers with redundant internal AC adapters, attached to an APC UPS (with its own internal AC adapter)--all actively cooled to 70-something F in some poorly-insulated re-purposed downtown building. I think Google made many of those improvements a very long time ago. I'd have expected their practices to be ubiquitous by now, but they're not...