Patent ID: 8510520

Claim:
A RAID controller having multi PCI bus switching, comprising: a first set of RAID circuitry comprising: a first disk mount coupled to a first set of SSD memory disk units, the first set of SSD memory disk units comprising a set of volatile semiconductor memories; a first disk monitoring unit coupled to the first disk mount for monitoring the first set of SSD memory disk units; a first disk plug and play controller coupled to the first disk monitoring unit and the first disk mount for controlling the first disk mount; a second set of RAID control circuitry comprising: a second disk mount coupled to a second set of SSD memory disk units, the second set of SSD memory disk units comprising a set of volatile semiconductor memories; a second disk monitoring unit coupled to the second disk mount for monitoring the second set of SSD memory disk units; a second disk plug and play controller coupled to the second disk monitoring unit and the second disk mount for controlling the second disk mount; a PCI bus coupling the first set of RAID circuitry to the second set of RAID circuitry; a backup storage unit coupled to a controller unit which stores data of the first set of SSD memory disk units and the second set of SSD memory disk units; and a backup control unit coupled to the controller unit which backs up data stored in the first set of SSD memory disk units and the second set of SSD memory disk units in the backup storage unit according to an instruction from a host, or when an error occurs in power transmitted from a host.