Patent ID: 8549381
Filing Date: 2013-10-01
Classification: G06F

Abstract:
1. A storage system, comprising: a plurality of flash memory devices, each of the flash memory devices including a flash memory controller and flash memory chips, which are configured as a first RAID group; and a plurality of hard disk drives which are configured as a second RAID group, and a storage controller, which is coupled to the plurality of flash memory devices and the plurality of hard disk drives, and configured to receive new data from a computer, and wherein when the new data to be stored to the first RAID group, a first flash memory controller of a first flash memory device is configured to generate new parity based on the new data, the old data which is to be updated by the new data and old parity which is to be updated by the new parity, and when the new data is to be stored to the second RAID group, the storage controller is configured to generate the new parity based on the new data, the old data which is to be updated by the new data and the old parity which is to be updated by the new parity.