What is Microsoft Fairwater Zero-Water Closed-Loop Cooling?

Microsoft Fairwater's zero-water closed-loop cooling is a data-center cooling architecture that circulates the same liquid coolant continuously through a sealed loop to remove heat from servers, rejecting that heat to the outside air through heat exchangers instead of evaporating water the way traditional cooling towers do. Because the coolant is recirculated rather than lost to evaporation, the system removes the ongoing water consumption associated with conventional evaporative data-center cooling.