CPR for SSDs

Bryan S. Kim; Eunji Lee; Sungjin Lee; Sang Lyul Min

doi:10.1145/3317550.3321437

CPR for SSDs

Bryan S. Kim, Eunji Lee, Sungjin Lee, Sang Lyul Min

Research output: Chapter in Book/Entry/Poem › Conference contribution

4 Scopus citations

Abstract

Modern storage systems are built upon the assumption that the capacity of a storage device does not change. This capacity-invariant interface forces a flash-based storage device to trade performance for reliability when, in fact, it can maintain both if a graceful reduction in capacity were to be allowed. We argue that relaxing the fixed capacity abstraction of the storage device allows for a better capacity-performance-reliability (CPR) tradeoff. We then outline existing device-internal mechanisms for building a capacity-variant flash device, and describe the necessary changes in the storage stack.

Original language	English (US)
Title of host publication	Proceedings of the Workshop on Hot Topics in Operating Systems, HotOS 2019
Publisher	Association for Computing Machinery, Inc
Pages	201-208
Number of pages	8
ISBN (Electronic)	9781450367271
DOIs	https://doi.org/10.1145/3317550.3321437
State	Published - May 12 2019
Externally published	Yes
Event	2019 Workshop on Hot Topics in Operating Systems, HotOS 2019 - Bertinoro, Italy Duration: May 13 2019 → May 15 2019

Publication series

Name	Proceedings of the Workshop on Hot Topics in Operating Systems, HotOS 2019

Conference

Conference	2019 Workshop on Hot Topics in Operating Systems, HotOS 2019
Country/Territory	Italy
City	Bertinoro
Period	5/13/19 → 5/15/19

ASJC Scopus subject areas

Computer Networks and Communications
Hardware and Architecture
Information Systems

Access to Document

10.1145/3317550.3321437

Cite this

Kim, BS, Lee, E, Lee, S & Min, SL 2019, CPR for SSDs. in Proceedings of the Workshop on Hot Topics in Operating Systems, HotOS 2019., 3321437, Proceedings of the Workshop on Hot Topics in Operating Systems, HotOS 2019, Association for Computing Machinery, Inc, pp. 201-208, 2019 Workshop on Hot Topics in Operating Systems, HotOS 2019, Bertinoro, Italy, 5/13/19. https://doi.org/10.1145/3317550.3321437

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author = "Kim, {Bryan S.} and Eunji Lee and Sungjin Lee and Min, {Sang Lyul}",

note = "Publisher Copyright: {\textcopyright} 2019 ACM.; 2019 Workshop on Hot Topics in Operating Systems, HotOS 2019 ; Conference date: 13-05-2019 Through 15-05-2019",

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AB - Modern storage systems are built upon the assumption that the capacity of a storage device does not change. This capacity-invariant interface forces a flash-based storage device to trade performance for reliability when, in fact, it can maintain both if a graceful reduction in capacity were to be allowed. We argue that relaxing the fixed capacity abstraction of the storage device allows for a better capacity-performance-reliability (CPR) tradeoff. We then outline existing device-internal mechanisms for building a capacity-variant flash device, and describe the necessary changes in the storage stack.

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M3 - Conference contribution

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ER -

CPR for SSDs

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