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A continuous data protection system and its realization method

A continuous data protection and data technology, which is applied in the direction of electrical digital data processing, special data processing applications, redundant data error detection in computing, etc., can solve the problems of large data storage requirements and poor reliability

Active Publication Date: 2009-10-28
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to overcome the defects of poor reliability of continuous data protection and large demand for data storage in the prior art, the present invention proposes a continuous data protection system and its implementation method

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  • A continuous data protection system and its realization method
  • A continuous data protection system and its realization method
  • A continuous data protection system and its realization method

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Embodiment Construction

[0042] A continuous data protection system and its implementation method provided by the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] In an embodiment according to the present invention, a continuous data protection (Continuous DataProtection, CDP) system such as figure 1As shown, the CDP system includes a management tool module, a main module and physical devices. The physical device refers to the storage device of the CDP system, which is used to store metadata and user data, and is also the final data storage device of the CDP system. The management tool module consists of a set of user space commands, which are responsible for management work such as creation / deletion in the main module of the kernel space. The main module consists of three sub-modules: Timestamp Storage (TS), Metadata Storage (MS) and Permanent Storage (PS). The functions of the three sub-modules are relatively independ...

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Abstract

The present invention proposes a continuous data protection (Continuous Data Protection CDP) system and its implementation method. The system includes a management tool module, a main body module and physical equipment, and the system can be flexibly stacked. Use the management tool module to create a main module with a time point, and perform read, write, and storage operations on the main module. According to the data access frequency and data level, the recently accessed and important data will be fine-grained. CDP technology, Coarse-grained backup protection technology is adopted for infrequently accessed and non-important data, so that continuous data protection of different protection granularities can be supported, and through a flexible stack structure, the amount of data storage can be reduced without reducing the reliability of continuous data protection demand.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06F11/14
Inventor 柯剑许金萍吴忠杰朱旭东
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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