Patent ID: 7051216
Filing Date: 2006-05-23
Classification: G06F,G11B

Abstract:
1. A storage system, comprising: a plurality of disk drive units having a plurality of disk drives which have a plurality of storage regions; a controller which transfers data to said storage regions; at least one data line being used to relay data transferred from said controller; at least one first AC/DC power supply being inputted AC input and supplying a first portion of said disk drive units with DC power; at least one first power line being used to relay DC power from said at least one first AC/DC power supply to said first portion; a first DC power supply coupled to said at least one first power line via a first backflow prevention device and corresponding to said first portion and supplying said first portion with DC power which is less than inputted DC power; at least one second AC/DC power supply being inputted AC input and supplying a second portion of said disk drive units with DC power; at least one second power line being used to relay DC power from said at least one second AC/DC power supply to said second portion; and a second DC power supply coupled to said at least one second power line via a second backflow prevention device and corresponding to said second portion and supplying said second portion with DC power which is less than inputted DC power; wherein said first DC power supply is coupled to said at least one second power line via a third backflow prevention device, wherein said second DC power supply is coupled to said at least one first power line via a fourth backflow prevention device, wherein voltage of said first backflow prevention device is corresponding to voltage of said second backflow prevention device, and wherein voltage of said third backflow prevention device is corresponding to voltage of said fourth backflow prevention device.