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Error Analysis and Retention-Aware Error Management

Authored on: Jun 1, 2013 by Yu Cai et al

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With continued scaling of NAND flash memory process technology and multiple bits programmed per cell, NAND flash reliability and endurance are degrading. In our research, we experimentally measure, characterize, analyze, and model error patterns in nanoscale flash memories. Based on the understanding developed using real flash memory chips, we design techniques for more efficient and effective error management than traditionally used costly error correction codes. This paper summarizes Intel's major error characterization results and mitigation techniques for NAND flash memory. In addition it offers a brief description of our ongoing related work in combating scaling challenges of both NAND flash memory and DRAM memory.
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