ocr: Figure 5it Drive, power, cooling and controllers suosystems are, redundant Controller Orives Power Cooling Misc. ndividual Components MBI controller 339 milion Drives 212: milion Power 155 milion Cooling 52million Misc. 1.117,000 Overali System MTBI: =1,070,000hours, heredundant controler, drives, power. and. cooling systems have increased the overall: system MTBImore than.35 times.