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ACM Transactions on Storage (TOS), Volume 6 Issue 3, September 2010

Guest editorial: FAST'10
Randal Burns, Kimberly Keeton
Article No.: 8
DOI: 10.1145/1837915.1837916

Understanding latent sector errors and how to protect against them
Bianca Schroeder, Sotirios Damouras, Phillipa Gill
Article No.: 9
DOI: 10.1145/1837915.1837917

Latent sector errors (LSEs) refer to the situation where particular sectors on a drive become inaccessible. LSEs are a critical factor in data reliability, since a single LSE can lead to data loss when encountered during RAID reconstruction after...

Optimizing energy and performance for server-class file system workloads
Priya Sehgal, Vasily Tarasov, Erez Zadok
Article No.: 10
DOI: 10.1145/1837915.1837918

Recently, power has emerged as a critical factor in designing components of storage systems, especially for power-hungry data centers. While there is some research into power-aware storage stack components, there are no systematic studies...

Membrane: Operating system support for restartable file systems
Swaminathan Sundararaman, Sriram Subramanian, Abhishek Rajimwale, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau, Michael M. Swift
Article No.: 11
DOI: 10.1145/1837915.1837919

We introduce Membrane, a set of changes to the operating system to support restartable file systems. Membrane allows an operating system to tolerate a broad class of file system failures, and does so while remaining transparent to running...

quFiles: The right file at the right time
Kaushik Veeraraghavan, Jason Flinn, Edmund B. Nightingale, Brian Noble
Article No.: 12
DOI: 10.1145/1837915.1837920

A quFile is a unifying abstraction that simplifies data management by encapsulating different physical representations of the same logical data. Similar to a quBit (quantum bit), the particular representation of the logical data displayed by a...

I/O Deduplication: Utilizing content similarity to improve I/O performance
Ricardo Koller, Raju Rangaswami
Article No.: 13
DOI: 10.1145/1837915.1837921

Duplication of data in storage systems is becoming increasingly common. We introduce I/O Deduplication, a storage optimization that utilizes content similarity for improving I/O performance by eliminating I/O operations and reducing the mechanical...

DFS: A file system for virtualized flash storage
William K. Josephson, Lars A. Bongo, Kai Li, David Flynn
Article No.: 14
DOI: 10.1145/1837915.1837922

We present the design, implementation, and evaluation of Direct File System (DFS) for virtualized flash storage. Instead of using traditional layers of abstraction, our layers of abstraction are designed for directly accessing flash memory...