Performance Evaluation of Host Aware Shingled Magnetic Recording (HA-SMR) Drives

Fenggang Wu; Ziqi Fan; Ming Chang Yang; Baoquan Zhang; Xiongzi Ge; David H.C. Du

doi:10.1109/TC.2017.2713360

Performance Evaluation of Host Aware Shingled Magnetic Recording (HA-SMR) Drives

Fenggang Wu, Ziqi Fan, Ming Chang Yang, Baoquan Zhang, Xiongzi Ge, David H.C. Du

Computer Science and Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Shingled Magnetic Recording (SMR) drives can benefit large-scale storage systems by reducing the Total Cost of Ownership (TCO) of dealing with explosive data growth. Among all existing SMR models, Host Aware SMR (HA-SMR) looks the most promising for its backward compatibility with legacy I/O stacks and its ability to use new SMR-specific APIs to support host I/O stack optimization. Building storage systems using HA-SMR drives calls for a deep understanding of the drive's performance characteristics. To accomplish this, we conduct in-depth performance evaluations on HA-SMR drives with a special emphasis on the performance implications of the SMR-specific APIs and how these drives can be deployed in large storage systems. We discover both favorable and adverse effects of using HA-SMR drives under various workloads. We also investigate the drive's performance under legacy production environments using real-world enterprise traces. Finally, we propose a novel host-controlled buffer that can help to reduce the severity of the decline in HA-SMR performance under our discovered unfavorable I/O access patterns. Without a detailed comprehensive design, we show the potential of the host-controlled buffer by a case study.

Original language	English (US)
Article number	7942044
Pages (from-to)	1932-1945
Number of pages	14
Journal	IEEE Transactions on Computers
Volume	66
Issue number	11
DOIs	https://doi.org/10.1109/TC.2017.2713360
State	Published - Nov 1 2017

Bibliographical note

Funding Information:
This work is partially supported by NSF I/UCRC Center for Research in Intelligent Storage (CRIS) and the US National Science Foundation under awards: 1525617, 1439622, 1305237, and 1421913.

Publisher Copyright:
© 1968-2012 IEEE.

Keywords

H-Buffer
Host Aware SMR
characterization
system implication

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abstract = "Shingled Magnetic Recording (SMR) drives can benefit large-scale storage systems by reducing the Total Cost of Ownership (TCO) of dealing with explosive data growth. Among all existing SMR models, Host Aware SMR (HA-SMR) looks the most promising for its backward compatibility with legacy I/O stacks and its ability to use new SMR-specific APIs to support host I/O stack optimization. Building storage systems using HA-SMR drives calls for a deep understanding of the drive's performance characteristics. To accomplish this, we conduct in-depth performance evaluations on HA-SMR drives with a special emphasis on the performance implications of the SMR-specific APIs and how these drives can be deployed in large storage systems. We discover both favorable and adverse effects of using HA-SMR drives under various workloads. We also investigate the drive's performance under legacy production environments using real-world enterprise traces. Finally, we propose a novel host-controlled buffer that can help to reduce the severity of the decline in HA-SMR performance under our discovered unfavorable I/O access patterns. Without a detailed comprehensive design, we show the potential of the host-controlled buffer by a case study.",

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Performance Evaluation of Host Aware Shingled Magnetic Recording (HA-SMR) Drives

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Keywords

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