TY - GEN
T1 - SSKIP
T2 - 18th International Conference on Electronics, Information, and Communication, ICEIC 2019
AU - Li, Jian Geng
AU - Chen, Guan Yu
AU - Chang, Hsung Pin
AU - Chang, Da Wei
N1 - Publisher Copyright:
© 2019 Institute of Electronics and Information Engineers (IEIE).
PY - 2019/5/3
Y1 - 2019/5/3
N2 - NAND flash memory-based solid-state drives (SSDs) have been increasingly used in storage systems. Compared to single-level cell (SLC) NAND, which stores 1 bit per cell, multi-level cell (MLC) NAND stores 2 or more bits per cell, enabling higher-capacity and lower-cost SSDs. However, MLC NAND has inferior write performance compared to SLC NAND. A method to improve the write performance is to exploit the performance variability in MLC flash memory by skipping the slow pages (i.e., data writes always served by fast pages). However, excessive page skips cause the free space of the SSD to be consumed quickly, harmful to the SSD performance and lifetime. In this paper, a selective page skip mothed called SSKIP is proposed to improve the MLC write performance while maintaining the target SSD lifetime. According to the performance results, SSKIP can improve the performance by up to 56% by performing page skips. Moreover, it prevents violating the target lifetime warranty due to excessive page skips.
AB - NAND flash memory-based solid-state drives (SSDs) have been increasingly used in storage systems. Compared to single-level cell (SLC) NAND, which stores 1 bit per cell, multi-level cell (MLC) NAND stores 2 or more bits per cell, enabling higher-capacity and lower-cost SSDs. However, MLC NAND has inferior write performance compared to SLC NAND. A method to improve the write performance is to exploit the performance variability in MLC flash memory by skipping the slow pages (i.e., data writes always served by fast pages). However, excessive page skips cause the free space of the SSD to be consumed quickly, harmful to the SSD performance and lifetime. In this paper, a selective page skip mothed called SSKIP is proposed to improve the MLC write performance while maintaining the target SSD lifetime. According to the performance results, SSKIP can improve the performance by up to 56% by performing page skips. Moreover, it prevents violating the target lifetime warranty due to excessive page skips.
UR - http://www.scopus.com/inward/record.url?scp=85065878540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065878540&partnerID=8YFLogxK
U2 - 10.23919/ELINFOCOM.2019.8706493
DO - 10.23919/ELINFOCOM.2019.8706493
M3 - Conference contribution
AN - SCOPUS:85065878540
T3 - ICEIC 2019 - International Conference on Electronics, Information, and Communication
BT - ICEIC 2019 - International Conference on Electronics, Information, and Communication
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 22 January 2019 through 25 January 2019
ER -