Concurrent processes of CDP in object-based file system

Jie Yao; Qiang Cao; Jianzhong Huang

doi:10.1117/12.843131

23 October 2009 Concurrent processes of CDP in object-based file system

Jie Yao, Qiang Cao, Jianzhong Huang

Proceedings Volume 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies; 75170W (2009) https://doi.org/10.1117/12.843131
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

An object-based storage system - integrating advantages of both NAS and SAN - can be applied in large-capacity, lowcost and large-scale storage systems built from commodity disk devices. The continuous data protection or CDP is a well-known technique that continuously captures or tracks data modifications and stores changes independent of primary data, enabling data recovery - from any point in the past. An efficient file system optimized for CDP plays an important role in object-based storage systems. In this paper, concurrent processes during data backup and data recovery operations are discussed in details. To fully take the advantage of distributed system architectures, we make the concurrent data operations as far as possible during read, write, and recovery processes. A new backup data object placement strategy is present to work in coordination with a replica strategy in object-based distributed file systems. Backup data object can be placed in other object storage servers (or OSS for short) instead of the OSS where the original data is residing, when the backup data object matches certain conditions. For data recovery, we make the related OSSes to concurrently perform data object movement. All these strategies can efficiently reduce system response times.

Citation Download Citation

Jie Yao, Qiang Cao, and Jianzhong Huang "Concurrent processes of CDP in object-based file system", Proc. SPIE 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies, 75170W (23 October 2009); https://doi.org/10.1117/12.843131

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KEYWORDS

Data backup

Data storage

Distributed computing

Data processing

Data storage servers

Optoelectronics

Reliability

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