Systems and methods for redundantly storing error correction codes in a flash drive with secondary parity information spread out across each page of a group of pages
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United States of America Patent
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Apr 28, 2015
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app pub date -
May 22, 2012
filing date -
May 22, 2012
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Abstract
Apparatus and methods provide relatively low uncorrectable bit error rates, low write amplification, long life, fast and efficient retrieval, and efficient storage density such that a solid-state drive (SSD) can be implemented using relatively inexpensive MLC Flash for an enterprise storage application. Both primary parity symbols for primary codewords and secondary parity symbols for secondary codewords are generated. The secondary parity symbols are spread out across each page of a group of pages.
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