SpartanSSD: A Reliable SSD under Capacitance Constraints

Hyeon Gyu Lee, Juwon Lee, Minwook Kim, Donghwa Shin, Sungjin Lee, Bryan S. Kim, Eunji Lee, Sang Lyul Min

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we present an SSD design that is resilient to sudden power-off failures. Modern SSDs use a large number of capacitors that act as energy reserves to persist both host data and SSD metadata in the unforeseen event of a power outage. However, these capacitors take up a large footprint that limits the SSD's density. We present a series of design choices that significantly reduce the SSD's dependence on capacitors, all the while meeting the durability, consistency, and power-on time constraints. We demonstrate that at a modest performance overhead of 11%, the amount of required capacitance is reduced by 97.87%.

Original languageEnglish (US)
Title of host publication2021 IEEE/ACM International Symposium on Low Power Electronics and Design, ISLPED 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665439220
DOIs
StatePublished - Jul 26 2021
Externally publishedYes
Event2021 IEEE/ACM International Symposium on Low Power Electronics and Design, ISLPED 2021 - Boston, United States
Duration: Jul 26 2021Jul 28 2021

Publication series

NameProceedings of the International Symposium on Low Power Electronics and Design
Volume2021-July
ISSN (Print)1533-4678

Conference

Conference2021 IEEE/ACM International Symposium on Low Power Electronics and Design, ISLPED 2021
Country/TerritoryUnited States
CityBoston
Period7/26/217/28/21

Keywords

  • energy efficiency
  • flash memory
  • reliability

ASJC Scopus subject areas

  • Engineering(all)

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