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CDStore: Toward Reliable, Secure, and Cost-Efficient Cloud Storage via Convergent Dispersal
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You are not authorized to post comments.Mingqiang Li, Chuan Qin, and Patrick P. C. Lee, The Chinese University of Hong Kong
We present CDStore, which disperses users’ backup data across multiple clouds and provides a unified multi-cloud storage solution with reliability, security, and cost efficiency guarantees. CDStore builds on an augmented secret sharing scheme called convergent dispersal, which supports deduplication by using deterministic content-derived hashes as inputs to secret sharing. We present the design of CDStore, and in particular, describe how it combines convergent dispersal with two-stage deduplication to achieve both bandwidth and storage savings and be robust against side-channel attacks. We evaluate the performance of our CDStore prototype using real-world workloads on LAN and commercial cloud testbeds. Our cost analysis also demonstrates that CDStore achieves a monetary cost saving of 70% over a baseline cloud storage solution using state-of-the-art secret sharing.
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author = {Mingqiang Li and Chuan Qin and Patrick P. C. Lee},
title = {{CDStore}: Toward Reliable, Secure, and {Cost-Efficient} Cloud Storage via Convergent Dispersal},
booktitle = {2015 USENIX Annual Technical Conference (USENIX ATC 15)},
year = {2015},
isbn = {978-1-931971-225},
address = {Santa Clara, CA},
pages = {111--124},
url = {https://www.usenix.org/conference/atc15/technical-session/presentation/li-mingqiang},
publisher = {USENIX Association},
month = jul
}
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