AONT-RS: Blending Security and Performance in Dispersed Storage Systems

Jason K. Resch, Cleversafe, Inc., James S. Plank, EECS Department, University of Tennessee,

Appearing in FAST-2011: 9th USENIX Conference on File and Storage Technologies San Jose, California, February, 2011, pages 191-202.

PDF of the paper.

Abstract

Dispersing files across multiple sites yields a variety of obvious benefits, such as availability, proximity and reliability. Less obviously, it enables security to be achieved without relying on encryption keys. Standard approaches to dispersal either achieve very high security with correspondingly high computational and storage costs, or low security with lower costs. In this paper, we describe a new dispersal scheme, called AONT-RS, which blends an All-Or-Nothing Transform with Reed-Solomon coding to achieve high security with low computational and storage costs. We evaluate this scheme both theoretically and as implemented with standard open source tools. AONT-RS forms the backbone of a commercial dispersed storage system, which we briefly describe and then use as a further experimental testbed. We conclude with details of actual deployments.

Citation Information

Plain Text:

.inproceedings  rp:11:aont
author          J. K. Resch and J. S. Plank
title           AONT-RS: Blending Security and Performance in Dispersed Storage Systems
booktitle       FAST-2011: 9th Usenix Conference on File and Storage Technologies
month           February
year            2011
pages           191-202
where           http://web.eecs.utk.edu/~jplank/plank/papers/FAST-2011.html

Bibtex:

@INPROCEEDINGS{rp:11:aont,
        author = "J. K. Resch and J. S. Plank",
        title = "{AONT-RS:} Blending Security and Performance in Dispersed Storage Systems",
        booktitle = "FAST-2011: 9th Usenix Conference on File and Storage Technologies",
        month = "February",
        year = "2011",
        pages = "191-202",
        where = "http://web.eecs.utk.edu/~jplank/plank/papers/FAST-2011.html"
}