Data recovery method and system for data storage device based on raid technology

Abstract

The invention discloses a method and system for recovering data of data storage equipment. The method comprises the following steps of: 1, numbering each data block in data storage equipment; 2, when sub-data storage equipment a in the data storage equipment is damaged, recording corresponding data block numbers of all the data which are not successfully written in the sub-data storage equipment a when the sub-data storage equipment a is damaged, and the corresponding data block numbers of all the data after the sub-data storage equipment a is damaged, so as to generate first record information; 3, changing the damaged sub-data storage equipment into an undamaged sub-data storage equipment b, copying data of the sub-data storage equipment a into the sub-data storage equipment, and recording number information of the data blocks, the copying of which fail, so as to generate second record information; and 4, generating to-be-reconstructed data block numbers according to the first record information and the second record information, and reconstructing corresponding data blocks according to an raid algorithm. According to the method and system disclosed by the invention, the technical effect of efficiently and rapidly finishing the data recovery of the data storage equipment is realized.

Description

technical field [0001] The present invention relates to the field of data storage and processing, in particular to a data recovery method and system for a data storage device based on raid technology. Background technique [0002] Current storage generally adopts raid technology to avoid data loss caused by a single hardware failure. There are raid5, raid6, Huawei's raid2.0 technology, etc. to avoid disk damage; N+M raid to avoid cloud storage server failure, etc. When the storage data node (disk, or server) fails, the damaged hardware can be directly replaced with new hardware by using raid technology, and then the data on the new hardware can be restored through an algorithm. [0003] Taking raid5 as an example, its technical implementation is shown in Table 1: [0004] Table 1 [0005] [0006] RAID 5 is a storage solution that balances storage performance, data security, and storage cost. Taking the RAID 5 composed of four hard disks as an example, the data storag...

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Problems solved by technology

[0013] The present invention provides a data storage device data recovery method and system based on raid technology, which solves the problem of large amount of calculation and low efficiency in the existing data storage device data recovery mode, and the data storage device data recovery process in the process of data recovery The technical problem of severe decline in external business processing capacity has achieved efficient and fast data recovery of data storage devices and guaranteed the technical effect of external business processing capabilities of data storage devices

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