A continuous data protection system and its realization method

Abstract

The invention provides a Continuous Data Protection CDP system and the realizing method thereof. The system comprises a management tool module, a main body module and physical equipment. The system can perform flexible stack. The management tool module is used for building the main body module with a temporal point, and performing the operations of reading, writing and storing to the main body module, according to the difference of the data access frequency and the data level, the important data which is accessed recently adopts a CDP technique with a fine grit, the non-important data which is not accessed often adopts a back-up protection technique with a coarse particle size, thereby the invention can support continuous data protection of different protection granularities, through the flexible stack structure, the requirement of the data memory capacity is reduced, while the reliability for the data continuous protection is not reduced.

Description

technical field

[0001] The present invention relates to the technical field of data protection, and more specifically, the present invention relates to a continuous data protection (Continuous Data Protection, CDP) system and an implementation method thereof. Background technique

[0002] CDP technology is a data continuous point-in-time protection technology, which is used to solve the problems of time-consuming data backup and inefficient recovery ability in traditional snapshot-backup data protection technology. Currently, according to data protection granularity, CDP technology is divided into near CDP (Near CDP) technology and true CDP (True CDP) technology. The quasi-CDP technology adopts the snapshot technology to take a read-only snapshot of the source data at a certain point in time, which is a static image of the data at that time, and only reflects the data situation at the point in time when the snapshot is taken. Manual snapshots, when reading historical versio...

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