Improved disk array reconstruction method

A disk array and disk technology, applied in the direction of response error generation, redundant code error detection, input/output to record carrier, etc., can solve problems such as read and write performance impact, reconstruction failure, data loss, etc., to reduce data loss The risk of loss, the effect of shortening the time
CN102012847AActive Publication Date: 2011-04-13UNITED INFORMATION TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNITED INFORMATION TECH
Publication Date
2011-04-13

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Abstract

The invention provides a disk array reconstruction method. The improved disk array reconstruction method comprises the following steps of: A, counting error counts in disks in a redundant array of independent disks (RAID) system; B, judging whether the error count in one disk of the RAID system exceeds a preset threshold value or not, if so, executing a step C, otherwise returning to the step a; C, setting the disk as a warning disk, activating a preset hot spare disk and replicating existing data in the warning disk into the hot spare disk; and D, after the replication, deleting the warning disk from the RAID system and substituting the hot spare disk for the error disk as the component disk of the RAID system. In the scheme, the risk of data loss in the reconstruction process can be effectively reduced and the reconstruction process is accelerated.
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Description

technical field

[0001] The present invention relates to the technical field of computer storage, in particular to redundant array of independent disks (Redundant Array of Independent Disks, RAID) technology, and in particular to an improved disk array rebuilding method. Background technique

[0002] RAID is a technology that combines multiple independent disks in different ways to form a disk group (logical disk), thereby providing higher storage performance and data redundancy protection than a single disk. The principle of RAID technology is to store data and corresponding parity information on each disk that makes up the RAID system, and store parity information and corresponding data on different disks. When the data on a disk of the RAID system is damaged, use the remaining data and corresponding parity information to recover the damaged data. As the foundation and key component of the network storage system, RAID is famous for its fast speed, large volume and high rel...

Claims

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