多云存储关键技术研究进展

Research Progress on Key Technologies of Multi-Cloud Storage

传统单云存储在数据安全与服务弹性方面存在数据隐私泄漏及难以满足在线实时应用需求等缺陷,而多云存储技术能够通过虚拟化集成多个云供应商的在线存储服务实现统一存储、性能调优、数据安全与隐私保护等一系列功能,最大化地挖掘云存储资源价值。介绍多云存储技术的概念、系统架构及其优势,阐述多云存储技术在数据可用性、完整性、一致性和安全性方面存在的主要技术挑战,重点分析并总结多云存储各项关键技术的国内外研究现状,包括纠删码容错技术、数据完整性证明机制、并发控制方法以及安全重删技术,在此基础上,指出现有多云存储技术研究中存在的不足,并对未来发展方向进行探讨和展望。

Traditional single-cloud storage leads to data security and service flexibility problems,such as data privacy leakage and difficulty in meeting the needs of online real-time applications.Multi-cloud storage technology uses virtualization to integrate the online storage services of multiple cloud providers,so as to realize functions such as unified storage,performance tuning,data security and privacy protection,maximizing the value of cloud storage resources.This paper introduces the concept of multi-cloud storage technology,as well as its system architecture and advantages.Then the paper describes the main technical challenges of multi-cloud storage technology in data availability,integrity,consistency and security.And it focuses on analyzing and summarizing the research status of key techniques of multi-cloud storage,including erasure code-based fault tolerance,proof mechanism of data integrity,concurrency control method and secure deduplication technique.Finally,according to the weaknesses of the current research works on multi-cloud storage technology,this paper analyzes several potential further research directions.