23 October 2009 Highly reliable data layout schemes for very large scale storage systems
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Abstract
In this paper, we investigate data layout schemes and their impact on system reliability in a petabyte scale storage system built from thousands of Object-Based Storage Devices. We delve in two underlying data layout schemes: RAID 5 and RAID 5 mirroring. To accelerate data reconstruction, Fast Mirroring Copy is employed where the reconstructed objects are stored on different OBSDs throughout the system. In order to improve the system reliability, SMART Reliability Mechanism (SRM) is introduced for enhancing the reliability in very large-scale storage system. Analysis results show that they can be used to assure the reliability of data storage and efficiently utilize the disk resource while exert minimum impact on the whole systems performance.
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Dongjian Luo, Dongjian Luo, Haifeng Zhong, Haifeng Zhong, Wei Wu, Wei Wu, } "Highly reliable data layout schemes for very large scale storage systems", Proc. SPIE 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies, 75170T (23 October 2009); doi: 10.1117/12.845964; https://doi.org/10.1117/12.845964
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