Microsoft is starting to submerge its servers in liquid to improve their performance and energy efficiency. A rack of servers is now being used for production loads in what looks like a liquid bath. From a report: This immersion process has existed in the industry for a few years now, but Microsoft claims it’s “the first cloud provider that is running two-phase immersion cooling in a production environment.” The cooling works by completely submerging server racks in a specially designed non-conductive fluid. The fluorocarbon-based liquid works by removing heat as it directly hits components and the fluid reaches a lower boiling point (122 degrees Fahrenheit or 50 degrees Celsius) to condense and fall back into the bath as a raining liquid. This creates a closed-loop cooling system, reducing costs as no energy is needed to move the liquid around the tank, and no chiller is needed for the condenser either. “It’s essentially a bath tub,” explains Christian Belady, vice president of Microsoft’s data center advanced development group, in an interview with The Verge. “The rack will lie down inside that bath tub, and what you’ll see is boiling just like you’d see boiling in your pot. The boiling in your pot is at 100 degrees Celsius, and in this case it’s at 50 degrees Celsius.”
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