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Creators/Authors contains: "Yang, Jun"

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  1. ; ; ; ; ; ; ( , ACM Transactions on Storage)
    NAND flash memory-based SSDs have been widely adopted. The scaling of SSD has evolved from plannar (2D) to 3D stacking. For reliability and other reasons, the technology node in 3D NAND SSD is larger than in 2D, but data density can be increased via increasing bit-per-cell. In this work, we develop a novel reprogramming scheme for TLCs in 3D NAND SSD, such that a cell can be programmed and reprogrammed several times before it is erased. Such reprogramming can improve the endurance of a cell and the speed of programming, and increase the amount of bits written in a cellmore »per program/erase cycle, i.e., effective capacity. Our work is the first to perform a real 3D NAND SSD test to validate the feasibility of the reprogram operation. From the collected data, we derive the restrictions of performing reprogramming due to reliability challenges. Furthermore, a reprogrammable SSD (ReSSD) is designed to structure reprogram operations. ReSSD is evaluated in a case study in RAID 5 system (RSS-RAID). Experimental results show that RSS-RAID can improve the endurance by 35.7%, boost write performance by 15.9%, and increase effective capacity by 7.71%, with negligible overhead compared with conventional 3D SSD-based RAID 5 system.« less
    Free, publicly-accessible full text available February 28, 2023
  2. ; ; ; ( , 54th Annual IEEE/ACM International Symposium on Microarchitecture)
    Free, publicly-accessible full text available October 17, 2022
  3. ; ; ( , 2021 IEEE 39th International Conference on Computer Design (ICCD))
    Free, publicly-accessible full text available October 1, 2022
  4. ; ; ; ; ; ( , 54th Annual IEEE/ACM International Symposium on Microarchitecture)
    Free, publicly-accessible full text available October 17, 2022
  5. ; ; ; ; ( , 2021 IEEE 39th International Conference on Computer Design (ICCD))
    Free, publicly-accessible full text available October 1, 2022
  6. ; ; ; ( , Proceedings of the 48th International Colloquium on Automata, Languages, and Programming (ICALP 2021))
    Free, publicly-accessible full text available July 2, 2022
  7. ; ; ; ( , Proceedings of the 2021 on Great Lakes Symposium on VLSI)
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  8. ; ; ; ( , Proceedings of the 2021 ACM SIGMOD International Conference on Management of Data)
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  9. ; ; ; ( , Organic Letters)
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  10. ; ; ; ( , Proceedings of the 2021 International Conference on Data Engineering)
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