Adaptive write interference management with efficient mapping for shingled recording disks

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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages181-189
Number of pages9
ISBN (Electronic)9781538666487
DOIs
StatePublished - Nov 2019
Event37th IEEE International Conference on Computer Design, ICCD 2019 - Abu Dhabi, United Arab Emirates
Duration: 17 Nov 201920 Nov 2019

Publication series

NameProceedings - 2019 IEEE International Conference on Computer Design, ICCD 2019

Conference

Conference37th IEEE International Conference on Computer Design, ICCD 2019
CountryUnited Arab Emirates
CityAbu Dhabi
Period17/11/1920/11/19

Keywords

  • Shingle Translation Layer
  • Shingled Magnetic Recording
  • SMR
  • STL
  • Storage systems

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