POWER SUPPLY CONTROLLER, METHOD OF CONTROLLING POWER SUPPLY, AND STORAGE MEDIUM

PROBLEM TO BE SOLVED: To provide a power supply controller and a controlling method of power source, capable of taking actions effectively at the time of power failure. SOLUTION: At power failure, an input/output part 33 in an information processor 30 controls power supply units 34, 35 to set/reset countermeasure against power failure, based on a power supply management table storing a power failure notification and control information from an uninterruptible power supply unit. The power supply unit 34 serves as a main power supply in normal use, and the power supply unit 35 serves as an auxiliary power supply. When AC input is cut off because of power failure or the like, the main power supply unit 34 is switched to the auxiliary power supply unit 35. A peripheral apparatus control part 330 receives the power failure information, a computing apparatus 310 performs power source control processing, based on the processing information from the input/output part 330 at the information processing unit 31 through a bus converting part 332, which is stored in a storage medium 311. At this time, a UPS management table stored in an auxiliary storage 312 and preset to the respective peripheral apparatus is referred to.