Method and device for splitting and backing up data in cloud storage

Abstract

The design idea of ​​the method and device for cloud storage segmentation and backup data is to change the previous practice of completely storing data on the same physical storage device, and to divide the data into several data segments to save the verification information of each segment, and then save the verification information of each segment. Several copies of each data segment are copied, and the copies of these data segments are respectively stored on different physical storage devices. That is to carry out limited and controllable segmentation and backup of complete data. The number of fragments and the number of copies of each fragment are determined according to the high and low requirements for data confidentiality, integrity, and availability. When merging complete data, just re-merge the copies of the data fragments that pass the verification.

Description

technical field [0001] The invention relates to the field of cloud storage, that is, a network-based cloud storage partitioning and data backup method and device composed of several servers and several network storage devices to ensure data security. Background technique [0002] Cloud storage is a new concept extended and developed on the concept of cloud computing. It refers to the integration of a large number of different types of storage devices in the network through functions such as cluster applications, grid technology or distributed file systems. A system that works together through a collection of application software to jointly provide data storage and business access functions. When the core of cloud computing system computing and processing is the storage and management of large amounts of data, a large number of storage devices need to be configured in the cloud computing system, then the cloud computing system will be transformed into a cloud storage system, ...

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Problems solved by technology

[0005] The publication number is: CN 101605148A (architecture method of parallel system of cloud storage), although the files are stored in pieces and each file piece is stored on a certain storage server, although this avoids the possibility of a certain storage server being attacked by hackers. Or the entire file is leaked due to data leaks caused by system vulnerabilities, which increases the confidentiality of the file, but any data storage server that saves the file fails and the data cannot be read or the file is modified maliciously. The integrity and availability of the

[0006] The publication number is: CN 101977243A (Cloud Data Storage Allocation (DDCS)) In orde

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