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

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

doi:10.1109/MSST.2016.7897087

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

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

Department of Computer Science & Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-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 language	English
Title of host publication	2016 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016
Publisher	IEEE Computer Society
ISBN (Electronic)	9781467390552
DOIs	https://doi.org/10.1109/MSST.2016.7897087
State	Published - 2 Jul 2016
Event	32nd Symposium on Mass Storage Systems and Technologies, MSST 2016 - Santa Clara, United States Duration: 2 May 2016 → 6 May 2016

Publication series

Name	IEEE Symposium on Mass Storage Systems and Technologies
Volume	0
ISSN (Print)	2160-1968

Conference

Conference	32nd Symposium on Mass Storage Systems and Technologies, MSST 2016
Country/Territory	United States
City	Santa Clara
Period	2/05/16 → 6/05/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Flash Memory
Non-volatile Memory
Write Amplification

Access to Document

10.1109/MSST.2016.7897087

Cite this

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title = "Reducing write amplification of flash storage through Cooperative Data Management with NVM",

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.",

keywords = "Flash Memory, Non-volatile Memory, Write Amplification",

author = "Eunji Lee and Julie Kim and Hyokyung Bahn and Noh, {Sam H.}",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016 ; Conference date: 02-05-2016 Through 06-05-2016",

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doi = "10.1109/MSST.2016.7897087",

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Lee, E, Kim, J, Bahn, H & Noh, SH 2016, Reducing write amplification of flash storage through Cooperative Data Management with NVM. in 2016 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016., 7897087, IEEE Symposium on Mass Storage Systems and Technologies, vol. 0, IEEE Computer Society, 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016, Santa Clara, United States, 2/05/16. https://doi.org/10.1109/MSST.2016.7897087

Reducing write amplification of flash storage through Cooperative Data Management with NVM. / Lee, Eunji; Kim, Julie; Bahn, Hyokyung et al.
2016 32nd Symposium on Mass Storage Systems and Technologies, MSST 2016. IEEE Computer Society, 2016. 7897087 (IEEE Symposium on Mass Storage Systems and Technologies; Vol. 0).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Lee, Eunji

AU - Kim, Julie

AU - Bahn, Hyokyung

AU - Noh, Sam H.

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N2 - 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.

AB - 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.

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M3 - Conference contribution

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PB - IEEE Computer Society

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Y2 - 2 May 2016 through 6 May 2016

ER -

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

Abstract

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Bibliographical note

Keywords

Access to Document

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Cite this