Invention Grant
- Patent Title: Using reliability information from multiple storage units and a parity storage unit to recover data for a failed one of the storage units
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Application No.: US15438655Application Date: 2017-02-21
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Publication No.: US10176042B2Publication Date: 2019-01-08
- Inventor: Andre Lei , Scott Nelson , Zion S. Kwok , Ravi H. Motwani
- Applicant: INTEL CORPORATION
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Compass IP Law PC
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G11C29/52 ; H03M13/11 ; G11C5/14

Abstract:
Provided are a method, system, and apparatus using reliability information from multiple storage units and a parity storage unit to recover data for a failed one of the storage units. A decoding operation of the codeword is performed in each of the storage units comprising the data storage units other than the target data storage unit and the parity storage unit to produce reliability information. In response to the decoding operation failing for at least one additional failed storage unit comprising the data and/or parity storage units other than the target data storage unit that failed to decode, reliability information is obtained for the data portion of the at least one additional failed storage unit. The reliability information obtained from the storage units other than the target data storage unit is used to produce corrected data for the data unit in the target data storage unit.
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