Reducing write amplification of flash storage through Cooperative Data Management with NVM

Eunji Lee, Julie Kim, Hyokyung Bahn, Sam H. Noh

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

8 Scopus citations

Abstract

Write amplification is a critical factor that limits the stable performance of flash-based storage systems. To reduce write amplification, this paper presents a new technique that cooperatively manages data in flash storage and nonvolatile memory (NVM). Our scheme basically considers NVM as the cache of flash storage, but allows the original data in flash storage to be invalidated if there is a cached copy in NVM, which can temporarily serve as the original data. This scheme eliminates the copy-out operation for a substantial number of cached data, thereby enhancing garbage collection efficiency. Experimental results show that the proposed scheme reduces the copy-out overhead of garbage collection by 51.4% and decreases the standard deviation of response time by 35.4% on average.

Original languageEnglish
Title of host publication2016 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016
PublisherIEEE Computer Society
ISBN (Electronic)9781467390552
DOIs
StatePublished - 2 Jul 2016
Event32nd Symposium on Mass Storage Systems and Technologies, MSST 2016 - Santa Clara, United States
Duration: 2 May 20166 May 2016

Publication series

NameIEEE Symposium on Mass Storage Systems and Technologies
Volume0
ISSN (Print)2160-1968

Conference

Conference32nd Symposium on Mass Storage Systems and Technologies, MSST 2016
Country/TerritoryUnited States
CitySanta Clara
Period2/05/166/05/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

  • Flash Memory
  • Non-volatile Memory
  • Write Amplification

Fingerprint

Dive into the research topics of 'Reducing write amplification of flash storage through Cooperative Data Management with NVM'. Together they form a unique fingerprint.

Cite this