TY - GEN
T1 - Retention Time Based Data Management Policy for Improving the Lifespan of SSDs
AU - Song, Yongju
AU - Lee, Minho
AU - Eom, Young Ik
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/5/25
Y1 - 2018/5/25
N2 - As the density of the flash memory continues to increase, the endurance issue of the flash memory based SSD is becoming more important. Reducing the retention time is one of the solutions to improve the lifespan of SSD. This is because the data stored on the SSD with short retention time requires less energy power when the data is erased by garbage collection; the less energy power can prolong the lifespan of SSD. For this reason, some researchers focus on the retention time to enhance the lifespan of SSD. However, previous work considers only the temporal locality, and therefore it reveals limited enhancement on the lifespan of SSD. In this paper, we propose a novel data classification scheme that considers the retention time of each flash block for efficient retention management and ultimately extends the lifespan of SSD. Our experiments show that the proposed scheme improves the lifespan of SSD by up to 7.2 times over the conventional SSD, with negligible performance degradation.
AB - As the density of the flash memory continues to increase, the endurance issue of the flash memory based SSD is becoming more important. Reducing the retention time is one of the solutions to improve the lifespan of SSD. This is because the data stored on the SSD with short retention time requires less energy power when the data is erased by garbage collection; the less energy power can prolong the lifespan of SSD. For this reason, some researchers focus on the retention time to enhance the lifespan of SSD. However, previous work considers only the temporal locality, and therefore it reveals limited enhancement on the lifespan of SSD. In this paper, we propose a novel data classification scheme that considers the retention time of each flash block for efficient retention management and ultimately extends the lifespan of SSD. Our experiments show that the proposed scheme improves the lifespan of SSD by up to 7.2 times over the conventional SSD, with negligible performance degradation.
KW - endurance
KW - Flash memory based SSD
KW - hot/cold data-separation
KW - refresh operation
KW - retention time
UR - https://www.scopus.com/pages/publications/85048478056
U2 - 10.1109/BigComp.2018.00081
DO - 10.1109/BigComp.2018.00081
M3 - Conference contribution
AN - SCOPUS:85048478056
T3 - Proceedings - 2018 IEEE International Conference on Big Data and Smart Computing, BigComp 2018
SP - 499
EP - 502
BT - Proceedings - 2018 IEEE International Conference on Big Data and Smart Computing, BigComp 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on Big Data and Smart Computing, BigComp 2018
Y2 - 15 January 2018 through 18 January 2018
ER -