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TailCut: Improving Performance and Lifetime of SSDs Using Pattern-Aware State Encoding
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Web of Science
Cited 2 time in Scopus
- Authors
- Issue Date
- 2022-07
- Citation
- Proceedings - Design Automation Conference, pp.409-414
- Abstract
- © 2022 ACM.Although lateral charge spreading is considered as a dominant error source in 3D NAND flash memory, little is known about its detailed characteristics at the storage system level. From a device characterization study, we observed that lateral charge spreading strongly depends on vertically adjacent state patterns and a few specific patterns are responsible for a large portion of bit errors from lateral charge spreading. We propose a new state encoding scheme, called TailCut, which removes vulnerable state patterns by modifying encoded states. By removing vulnerable patterns, TailCut can improve the SSD lifetime and read latency by 80% and 25%, respectively.
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