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Are disks the dominant contributor for storage failures?: A comprehensive study of storage subsystem failure characteristics

Are disks the dominant contributor for storage failures?: A comprehensive study of storage... Are Disks the Dominant Contributor for Storage Failures? A Comprehensive Study of Storage Subsystem Failure Characteristics WEIHANG JIANG, CHONGFENG HU, and YUANYUAN ZHOU University of Illinois at Urbana Champaign and ARKADY KANEVSKY Network Appliance, Inc. Building reliable storage systems becomes increasingly challenging as the complexity of modern storage systems continues to grow. Understanding storage failure characteristics is crucially important for designing and building a reliable storage system. While several recent studies have been conducted on understanding storage failures, almost all of them focus on the failure characteristics of one component ”disks ”and do not study other storage component failures. This article analyzes the failure characteristics of storage subsystems. More speci cally, we analyzed the storage logs collected from about 39,000 storage systems commercially deployed at various customer sites. The dataset covers a period of 44 months and includes about 1,800,000 disks hosted in about 155,000 storage-shelf enclosures. Our study reveals many interesting ndings, providing useful guidelines for designing reliable storage systems. Some of our major ndings include: (1) In addition to disk failures that contribute to 20 “55% of storage subsystem failures, other components such as physical interconnects and protocol stacks also account for a signi cant percentage http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Storage (TOS) Association for Computing Machinery

Are disks the dominant contributor for storage failures?: A comprehensive study of storage subsystem failure characteristics

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Publisher
Association for Computing Machinery
Copyright
Copyright © 2008 by ACM Inc.
ISSN
1553-3077
DOI
10.1145/1416944.1416946
Publisher site
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Abstract

Are Disks the Dominant Contributor for Storage Failures? A Comprehensive Study of Storage Subsystem Failure Characteristics WEIHANG JIANG, CHONGFENG HU, and YUANYUAN ZHOU University of Illinois at Urbana Champaign and ARKADY KANEVSKY Network Appliance, Inc. Building reliable storage systems becomes increasingly challenging as the complexity of modern storage systems continues to grow. Understanding storage failure characteristics is crucially important for designing and building a reliable storage system. While several recent studies have been conducted on understanding storage failures, almost all of them focus on the failure characteristics of one component ”disks ”and do not study other storage component failures. This article analyzes the failure characteristics of storage subsystems. More speci cally, we analyzed the storage logs collected from about 39,000 storage systems commercially deployed at various customer sites. The dataset covers a period of 44 months and includes about 1,800,000 disks hosted in about 155,000 storage-shelf enclosures. Our study reveals many interesting ndings, providing useful guidelines for designing reliable storage systems. Some of our major ndings include: (1) In addition to disk failures that contribute to 20 “55% of storage subsystem failures, other components such as physical interconnects and protocol stacks also account for a signi cant percentage

Journal

ACM Transactions on Storage (TOS) – Association for Computing Machinery

Published: Nov 1, 2008

References

  • Monitoring hard disks with smart
    Allen B.