Improving performance and lifetime of NAND storage systems using relaxed program sequence

Jisung Park, Jaeyong Jeong, Sungjin Lee, Youngsun Song, Jihong Kim

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

23 Scopus citations

Abstract

We propose a new system-level solution that improves both the performance and lifetime of NAND storage systems by exploiting the performance asymmetry of NAND devices. At the device level, we propose a new program sequence, called relaxed program sequence (RPS), which allows more flexible page allocations in a block without compromising NAND reliability. By combining RPS with per-block parity pages, we can improve the write bandwidth and eliminate expensive paired page backup operations. Experimental results show that the proposed technique can increase IOPS by up to 56% and reduce the number of block erasures by up to 30% over an existing RPS-oblivious FTL.

Original languageEnglish
Title of host publicationProceedings of the 53rd Annual Design Automation Conference, DAC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781450342360
DOIs
StatePublished - 5 Jun 2016
Event53rd Annual ACM IEEE Design Automation Conference, DAC 2016 - Austin, United States
Duration: 5 Jun 20169 Jun 2016

Publication series

NameProceedings - Design Automation Conference
Volume05-09-June-2016
ISSN (Print)0738-100X

Conference

Conference53rd Annual ACM IEEE Design Automation Conference, DAC 2016
Country/TerritoryUnited States
CityAustin
Period5/06/169/06/16

Bibliographical note

Publisher Copyright:
© 2016 ACM.

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