Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2008-01-22
2008-01-22
Al-Hashemi, Sana (Department: 2168)
Data processing: database and file management or data structures
Database design
Data structure types
C711S114000, C714S800000
Reexamination Certificate
active
07321905
ABSTRACT:
A recovery enabling system for storage arrays is a high distance generalization of RAID-5 with optimal update complexity and near optimal storage efficiency. The recovery enabling system utilizes presets, data cells with known values that initialize the reconstruction process. The presets allow resolution of parity equations to reconstruct data when failures occur. In one embodiment, additional copies of the layout of the recovery enabling system are packed onto the same disks to minimize the effect of presets on storage efficiency without destroying the clean geometric construction of the recovery enabling system. The recovery enabling system has efficient XOR-based encoding, recovery, and updating algorithms for arbitrarily large distances, making the recovery enabling system an ideal candidate when storage-efficient reliable codes are required.
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Hafner James Lee
Hartline Jeffrey R.
Kanungo Tapas
Al-Hashemi Sana
Cheung Hubert
Fleit Kain Gibbons Gutman Bongini & Bianco P.L.
International Business Machines - Corporation
Kassatly Samuel A.
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