Patent ID: 7284140
Filing Date: 2007-10-16
Classification: G06F,G11B

Abstract:
1. A storage system, comprising: a controller configured to transfer data to a plurality of storage regions; at least one data line being used to relay data transferred from said controller; a plurality of disk drive units coupled to said at least one data line and each having a disk drive which has some of said storage regions; at least one first AC/DC power supply being inputted AC input and supplying said disk drive units with DC power; at least one first power line coupled to said at least one first AC/DC power supply and said disk drive units and being used to relay DC power to said disk drive units; at least one second AC/DC power supply being inputted AC input and supplying said disk drive units with DC power; at least one second power line coupled to said at least one second AC/DC power supply and said disk drive units and being used to relay DC power to said disk drive units; and a first DC power supply coupled to said at least one first power line and said at least one second power line and corresponding to a first disk drive unit of said disk drive units and supplying said first disk drive unit with DC power which is less than inputted DC power, wherein said at least one first power line is used to relay DC power from said at least one first AC/DC power supply to said disk drive units, if a part related to said first disk drive unit does not have a failure, and wherein said at least one first power line is used to relay DC power from said at least one first AC/DC power supply to said disk drive units except said first disk drive unit, if said part related to said first disk drive unit has a failure.