Split parity spare disk achieving method in raid subsystem
September 22, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFile-based redundant parity protection in a parallel computing system Method and means for distributed sparing in DASD arrays Error correcting code technique for improving reliablility of a disk array Delayed initiation of read-modify-write parity operations in a raid level 5 disk array In log sparing for log structured arrays System and method for command queuing on raid levels 4 and 5 parity drives Method for maintaining parity-data consistency in a disk array Method and apparatus for taking countermeasure for failure of disk array Patent #: 5872906 InventorAssigneeApplicationNo. 935201 filed on 09/22/1997US Classes:714/6, Redundant stored data accessed (e.g., duplicated data, error correction coded data, or other parity-type data)711/114Arrayed (e.g., RAIDs)ExaminersPrimary: Beausoliel, Robert W. Jr.Assistant: Revak, Christopher Attorney, Agent or FirmForeign Patent References
International ClassG06F 011/16Foreign Application Priority Data1996-09-21 KRAbstractA split parity spare disk achieving method for improving the defect endurance and performance of a RAID subsystem which distributively stores data in a disk array consisting of a plurality of disk drives and carries out an input/output operation in parallel includes the steps of: constructing the disk array with at least two data disk drives for storing data, a spare disk drive used when a disk drive fails and a parity disk drive for storing parity data; and splitting the parity data of the parity disk drive and storing the split data in the parity disk drive and the spare disk drive.Other References
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