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A novel block-level continuous data protection system

机译:一种新颖的块级连续数据保护系统

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摘要

Continuous Data Protection (CDP) techniques have received great interest both from academia and industry in recent years. Aiming at the challenges to design and implement a CDP system, this paper proposes GSP_BCDP: a novel continuous data protection architecture at block level. Compared with other approaches, it uses a global shared storage pool to actually store all the versions of data contents, and each version of each logical volume bonded with a restore index table. The recovery of GSP_BCDP is per volume basis, rather than per block basis in other schemes, so GSP_BCDP can provide a much faster version restore than others. Furthermore, through global data de-duplication techniques, GSP_BCDP can not only reduce the duplications along the history of the same data stream, but also de-duplicate the redundancies among data streams or identities between different users. Experimental results demonstrate that GSP_BCDP can improve the recovery time up to more than 10 times, and with storage space compression ratio of 1.2 times in average.
机译:近年来,连续数据保护(CDP)技术引起了学术界和行业的极大兴趣。针对设计和实施CDP系统的挑战,本文提出了GSP_BCDP:一种新颖的块级连续数据保护架构。与其他方法相比,它使用全局共享存储池实际存储数据内容的所有版本,以及每个逻辑卷与还原索引表绑定的每个版本。 GSP_BCDP的恢复是基于卷的,而不是其他方案中的基于块的,因此GSP_BCDP可以提供比其他方案更快的版本还原。此外,通过全局数据重复数据删除技术,GSP_BCDP不仅可以减少沿同一数据流历史记录的重复数据,而且还可以重复数据流之间的冗余或不同用户之间的身份重复数据。实验结果表明,GSP_BCDP可以将恢复时间提高10倍以上,存储空间压缩率平均为1.2倍。

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