Hard disk array controller based on double hard disk redundancy

Abstract

The invention discloses a hard disk array controller based on double hard disk redundancy, which comprises a first data buffer area, a second data buffer area, a third data buffer area, a fourth data buffer area, a data playback verification module, a redundant data generation module, a damaged hard disk reconstruction module, a data gate, a hard disk control interface and a hard disk array. The storage and reading rate of the hard disk array controller can be still kept unchanged when an optional hard disk or two optional hard disks in the hard disk array are in failure, the hard disk array controller can still realize the functions of recording while playing back and playing back while reconstructing when some hard disks in the array are in failure, and safety of the hard disk array is greatly enhanced.

Description

technical field [0001] The invention relates to a hard disk array controller based on double hard disk redundancy. Background technique [0002] In the field of high-speed hard disk array data storage, with the continuous improvement of the read-write rate and capacity of a single hard disk, the storage rate and storage bandwidth of the hard disk array are also continuously improved. Mainstream development trend. However, the ensuing data security issues of hard disk arrays are also highlighted. On many occasions, people pay more attention to data security issues than to data storage speed. Especially in the field of aerospace, data storage and data security issues are particularly important. The manpower, material and financial resources spent on each mission are quite huge, so the data information obtained during the mission is also very precious. If it is properly preserved, the loss will be incalculable, and even lead to the failure of the entire mission. Adding redun...

AI Technical Summary

Problems solved by technology

However, the ensuing data security issues of hard disk arrays are also highlighted. On many occasions, people pay more attention to data security issues than to the data storage rate.

Especially in the field of aerospace, data storage and data security issues are particularly important. The manpower, material and financial resources spent on each mission are quite huge, so the data information obtained during the mission is also very precious. Properly preserved, the loss will be immeasurable, and even lead to the failure of the entire mission

Adding redundant data disks to the hard disk array, when a hard disk in the array fails, recovering the failed hard disk data according to the redundant information has become the main means to improve the security of the hard disk array, but the existing commercial hard disk array storage solutions Once there is a hard disk damage in the array, the read and write performance of the entire hard disk array will be greatly affected, and even the minimum storage performance requirements for performing tasks cannot be met.

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