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ACM Transactions on Storage (TOS), Volume 3 Issue 3, October 2007

Introduction to special issue USENIX FAST 2007
Andrea Arpaci-Dusseau, Remzi Arpaci-Dusseau
Article No.: 7
DOI: 10.1145/1288783.1288784

Understanding disk failure rates: What does an MTTF of 1,000,000 hours mean to you?
Bianca Schroeder, Garth A. Gibson
Article No.: 8
DOI: 10.1145/1288783.1288785

Component failure in large-scale IT installations is becoming an ever-larger problem as the number of components in a single cluster approaches a million.

This article is an extension of our previous study on disk failures [Schroeder and...

A five-year study of file-system metadata
Nitin Agrawal, William J. Bolosky, John R. Douceur, Jacob R. Lorch
Article No.: 9
DOI: 10.1145/1288783.1288788

For five years, we collected annual snapshots of file-system metadata from over 60,000 Windows PC file systems in a large corporation. In this article, we use these snapshots to study temporal changes in file size, file age, file-type frequency,...

Optimal multistream sequential prefetching in a shared cache
Binny S. Gill, Luis Angel D. Bathen
Article No.: 10
DOI: 10.1145/1288783.1288789

Prefetching is a widely used technique in modern data storage systems. We study the most widely used class of prefetching algorithms known as sequential prefetching. There are two problems that plague the state-of-the-art sequential...

Strong accountability for network storage
Aydan R. Yumerefendi, Jeffrey S. Chase
Article No.: 11
DOI: 10.1145/1288783.1288786

This article presents the design, implementation, and evaluation of CATS, a network storage service with strong accountability properties. CATS offers a simple web services interface that allows clients to read and write opaque objects of variable...

Contributing storage using the transparent file system
James Cipar, Mark D. Corner, Emery D. Berger
Article No.: 12
DOI: 10.1145/1288783.1288787

Contributory applications allow users to donate unused resources on their personal computers to a shared pool. Applications such as SETI@home, Folding@home, and Freenet are now in wide use and provide a variety of services, including...

PARAID: A gear-shifting power-aware RAID
Charles Weddle, Mathew Oldham, Jin Qian, An-I Andy Wang, Peter Reiher, Geoff Kuenning
Article No.: 13
DOI: 10.1145/1289720.1289721

Reducing power consumption for server-class computers is important, since increased energy usage causes more heat dissipation, greater cooling requirements, reduced computational density, and higher operating costs. For a typical data center,...