Adaptive write interference management with efficient mapping for shingled recording disks

Ming Chang Lee, Li Pin Chang, Sung Ming Wu, Wei Shang Yui

研究成果: Conference contribution同行評審

摘要

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.

原文English
主出版物標題Proceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019
發行者Institute of Electrical and Electronics Engineers Inc.
頁面181-189
頁數9
ISBN(電子)9781538666487
DOIs
出版狀態Published - 十一月 2019
事件37th IEEE International Conference on Computer Design, ICCD 2019 - Abu Dhabi, United Arab Emirates
持續時間: 17 十一月 201920 十一月 2019

出版系列

名字Proceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019

Conference

Conference37th IEEE International Conference on Computer Design, ICCD 2019
國家United Arab Emirates
城市Abu Dhabi
期間17/11/1920/11/19

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