期刊
IEEE TRANSACTIONS ON CLOUD COMPUTING
卷 9, 期 4, 页码 1349-1361出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCC.2019.2916856
关键词
Big-data storage; cloud storage; Byzantine fault tolerance
类别
资金
- European Commission [FP7-ICT-317871, H2020-ICT-643964, H2020-DS700692]
- FCT [PTDC/EEISCR/6970/2014, UID/CEC/00408/2019]
CHARON is a cloud-backed storage system that can store and share big data securely, reliably, and efficiently, without requiring trust on any single entity. It efficiently deals with large files and uses a novel Byzantine-resilient data-centric leasing protocol to avoid write-write conflicts. Evaluation shows up to 2.5x better performance compared to other cloud-backed solutions.
We present CHARON, a cloud-backed storage system capable of storing and sharing big data in a secure, reliable, and efficient way using multiple cloud providers and storage repositories to comply with the legal requirements of sensitive personal data. CHARON implements three distinguishing features: (1) it does not require trust on any single entity, (2) it does not require any client-managed server, and (3) it efficiently deals with large files over a set of geo-dispersed storage services. Besides that, we developed a novel Byzantine-resilient data-centric leasing protocol to avoid write-write conflicts between clients accessing shared repositories. We evaluate CHARON using micro and application-based benchmarks simulating representative workflows from bioinformatics, a prominent big data domain. The results show that our unique design is not only feasible but also presents an end-to-end performance of up to 2.5x better than other cloud-backed solutions.
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