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A financial service company's facility managers had no cause to suspect trouble in the computer room. Temperature and humidity seemed to be within normal ranges -- there had been no alarms. Two weeks earlier, after a contractor performed $20,000 worth of scheduled service, the facility had received a clean bill of health.
Yet in reality, the computer room climate control system was performing far below optimum. A closer look showed that several computer room air conditioners (CRACs) were operating below capacity and that cooling system power demand had increased markedly for no apparent reason. Room conditions were gradually slipping out of control; the risk of a ...