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AssigneeLSI Corporation
InventorsJeremy Isaac Nathaniel WERNER, Leonid BARYUDIN, Timothy Lawrence CANEPA, Earl T. COHEN
Estimating the term…
Higher-level redundancy information computation enables a Solid-State Disk (SSD) controller to provide higher-level redundancy capabilities to maintain reliable operation in a context of failures of non-volatile (e.g. flash) memory elements during operation of an SSD. A first portion of higher-level redundancy information is computed using parity coding via an XOR of all pages in a portion of data to be protected by the higher-level redundancy information. A second portion of the higher-level redundancy information is computed using a weighted-sum technique, each page in the portion being assigned a unique non-zero “index” as a weight when computing the weighted-sum. Arithmetic is performed over a finite field (such as a Galois Field). The portions of the higher-level redundancy information are computable in any order, such as an order based on order of read operation completion of non-volatile memory elements.
(canceled)
A method comprising:
A non-transitory computer readable medium having a set of instructions stored therein that when executed by a processing element cause the processing element to perform operations comprising:
A device for use coupled to one or more flash memories external to the device, the device comprising:
Dependencies are inferred from the claim text.