Storage (TOS)


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ACM Transactions on Storage (TOS), Volume 6 Issue 4, May 2011

A hybrid flash translation layer with adaptive merge for SSDs
Gyudong Shim, Youngwoo Park, Kyu Ho Park
Article No.: 15
DOI: 10.1145/1970338.1970339

The Flash Translation Layer (FTL) in Solid-State Disks (SSDs) maps logical addresses to physical addresses for disk drive virtualization. In order to reduce garbage collection overhead, we propose full associative striped block-level mapping. In...

Minimum density RAID-6 codes
James S. Plank, Adam L. Buchsbaum, Bradley T. Vander Zanden
Article No.: 16
DOI: 10.1145/1970338.1970340

RAID-6 codes protect disk array storage systems from two-disk failures. This article presents a complete treatment of a class of RAID-6 codes, called minimum density RAID-6 codes, that have an optimal blend of performance properties. There...

Online availability upgrades for parity-based RAIDs through supplementary parity augmentations
Lei Tian, Qiang Cao, Hong Jiang, Dan Feng, Changsheng Xie, Qin Xin
Article No.: 17
DOI: 10.1145/1970338.1970341

In this article, we propose a simple but powerful online availability upgrade mechanism, Supplementary Parity Augmentations(SPA), to address the availability issue in parity-based RAID systems. The basic idea of SPA is...