TY - GEN
T1 - Adaptive write interference management with efficient mapping for shingled recording disks
AU - Lee, Ming Chang
AU - Chang, Li Pin
AU - Wu, Sung Ming
AU - Yui, Wei Shang
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - Shingled Magnetic Recording (SMR) is a novel disk technology that partially overlaps adjacent disk tracks for high storage density. The partial overlap creates write interference between tracks, and overwriting a track requires to rewrite all its downstream tracks. Inspired by the highly unequal track modify probabilities under real workloads, we propose moving frequently modified tracks toward a downstream, deliberately reserved track, called a guard track, to reduce the extent of write interference. We also introduce a low-cost, seek-optimized scheme for efficient logical-to-physical address mapping. Experimental results showed that our approach outperformed a popular design by 54% and 55% on average in terms of write response time and total disk writes, respectively.
AB - Shingled Magnetic Recording (SMR) is a novel disk technology that partially overlaps adjacent disk tracks for high storage density. The partial overlap creates write interference between tracks, and overwriting a track requires to rewrite all its downstream tracks. Inspired by the highly unequal track modify probabilities under real workloads, we propose moving frequently modified tracks toward a downstream, deliberately reserved track, called a guard track, to reduce the extent of write interference. We also introduce a low-cost, seek-optimized scheme for efficient logical-to-physical address mapping. Experimental results showed that our approach outperformed a popular design by 54% and 55% on average in terms of write response time and total disk writes, respectively.
KW - SMR
KW - STL
KW - Shingle Translation Layer
KW - Shingled Magnetic Recording
KW - Storage systems
UR - http://www.scopus.com/inward/record.url?scp=85081161189&partnerID=8YFLogxK
U2 - 10.1109/ICCD46524.2019.00031
DO - 10.1109/ICCD46524.2019.00031
M3 - Conference contribution
AN - SCOPUS:85081161189
T3 - Proceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019
SP - 181
EP - 189
BT - Proceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 37th IEEE International Conference on Computer Design, ICCD 2019
Y2 - 17 November 2019 through 20 November 2019
ER -