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DATA STORAGE SYSTEMS AND METHODS HAVING BLOCK GROUP ERROR CORRECTION FOR REPAIRING UNRECOVERABLE READ ERRORS
DATA STORAGE SYSTEMS AND METHODS HAVING BLOCK GROUP ERROR CORRECTION FOR REPAIRING UNRECOVERABLE READ ERRORS
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机译:具有块组错误纠正功能以修复不可恢复的读取错误的数据存储系统和方法
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摘要
Data storage systems and methods perform error correction on a single physical storage disk. The technique includes arranging a plurality of addressable blocks on the single physical storage disk into error correction groups, wherein each error correction group includes N data blocks and M coding blocks. M is determined in accordance with a desired failure tolerance of the error correction groups and an error-correcting code. For each error correction group, error-correcting code data is computed across the N data blocks in the error correction group. The computed error-correcting coding data is stored in the M coding blocks in the error correcting group. The arranging, computing and storing steps are performed by a hardware or software component external to the single physical storage disk.
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