What temperature and humidity should my data center be at?

The laws of thermodynamics govern all data processing hardware. The computer manufacturer sets the temperature and relative humidity tolerances at a certain level, so room conditions need to be maintained at the set level to ensure that the equipment performs properly. Generally, the optimum temperature level is 65-72 degrees and the optimum humidity level is 45-55%.

Even though the equipment can operate within a fairly wide environmental range, it has been found that low humidity can cause electrostatic discharge. As electronic components, such as microchips, have become smaller, they have become more susceptible to damage from electrostatic discharge.

On the other hand, high humidity can cause corrosive build-up both in equipment and the subfloor structure. Metal oxide particles from floor pedestals, access grids, water pipes, and other exposed metal surfaces will find their way into sensitive electronic devices. Then, in addition, there is bacterial growth that can be found in air conditioners and the concrete subfloor. Fungal spores and mold growth can begin to form above 60% Humidity and can pose an occupant health threat, but the organic matter will also endanger the computer hardware as well. Organic bacteria can attach to sensitive materials within the computer hardware as well as form obstructive growths on DASD platters. Organically acidic growth will degrade the fine lubricants on the thin-film equipment or circuit units within the room.