Method for data reconstruction of disk array, and disk array system

Abstract

The present invention provides a method for data reconstruction of a disk array, and a disk array system. The method comprises: S1. determining original data of a current strip fragment in a source faulty disk is unreadable, and if yes, performing step S2, and if no, performing step S3; S2. determining a relevant strip fragment that belongs to the same strip as the current strip fragment, obtaining data of the relevant strip fragment, and reconstructing the original data of the current strip fragment according to the data of the relevant strip fragment, to obtain reconstructed data corresponding to the current strip fragment; and S3. reading the original data of the current strip fragment, and using the original data as reconstructed data corresponding to the current strip fragment. According to the method for the data reconstruction of the disk array and the disk array system provided by the present invention, the efficiency of the data reconstruction can be improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a data reconstruction method of a disk array and a disk array system. Background technique [0002] With the explosive growth of information volume and the increase in the complexity of computer applications, modern enterprise data centers rely more and more on storage to achieve core business data storage, key data protection, efficient backup recovery and archiving, and build disaster recovery systems to provide business continuity. sex and other important solutions. This puts higher and higher requirements on the capacity, speed, sustainability, and high availability of storage devices, and the data reconstruction speed of disk arrays in storage systems is an important factor. [0003] A disk array is a large-capacity disk group composed of many disks. The bonus effect of using individual disks to provide data improves the performance of the entire disk system. Using this ...

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Problems solved by technology

[0005] From the above description, it can be seen that in the existing disk array data reconstruction technology, the reconstruction of the data in the source faulty disk needs to read the data of all the normal disks in the disk array, and the read data is more, which takes more time. ; Then rebuild according to the data of the normal disk, each piece of data in the source failure disk needs to be obtained by rebuilding the data in the normal disk, the amount of data to be processed is relatively large, and it takes more time. In a word, the data reconstruction of the prior art less efficient

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