Patent ID: 8402210
Filing Date: 2013-03-19
Classification: G06F

Abstract:
1. A storage system comprising: a plurality of disk drives configured to store data sent from a computer; and a controller configured to control input/output of the data, wherein the controller appends data identification information to each of a plurality of logical data blocks corresponding to each of a plurality of a sectors that are physical storage regions in the plurality of the disk drives, wherein the data identification information indicates whether the data sent from the computer is stored in each of the plurality of blocks, and wherein the controller creates a parity logical data block P wherein, if the controller receives a format request, the controller stores unique data in at least one block of the plurality of logical data blocks, appends a guarantee code including a logical address and a longitudinal redundancy check to the at least one block, and configures the data identification information and the parity part data identification information to indicate that stored data is not sent from the computer,