Visited one of the 2 most efficient/green and secure datacenters of #switzerland in #sanktgallen : it was impressive to see the security measures in place (biometric access, sensors and cameras), and the almost fully symmetric design of the building for redundancy.
The coolest thing? The UPS system, able to keep the whole datacenter up and running for 15second by using a set of "Flywheel" systems, before the "big UPS brother" starts.