Patent ID: 6151665
Filing Date: 2000-11-21
Classification: G06F,G11B,Y10S

Abstract:
A method of managing blocks of information in a computer system, the computer system including a data processing system and a disc drive storage system coupled thereto, wherein the data processing system writes the blocks of information to the disc drive storage system for storage thereon, the disc drive storage system including a plurality of disc drives that each includes at least one disc, the plurality of disc drives including a first disc drive including a first disc and a second disc drive including a second disc, each of the discs having a surface including a plurality of information tracks, each of the tracks including a plurality of sectors, each sector for storing one of the blocks of information, each sector having a physical sector address that identifies a physical location of the sector on the surface of the disc, the method comprising a step of:(A) mirroring at least one block of information that is written to the first disc at a first physical sector address on the second disc at a second physical sector address that is different than the first physical sector address so that the at least one block of information written to the first disc is mirrored at a different physical location on the second disc;wherein the step (A) is implemented within the disc drive storage system so that in response to a same write I/O operation from the data processing system to the disc drive storage system, the disc drive storage system controls writing of the at least one block of information to both the first disc and the second disc.