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Data recovery method, storage equipment and storage system

A storage device and data technology, applied in the storage field, can solve problems such as disk failure, increased fault area, and head damage, and achieve the effect of ensuring data reliability and improving efficiency

Active Publication Date: 2014-01-22
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, before the data is restored, the host will still access the failed CK, and the damaged area of ​​the magnetic medium will physically spread, which will increase the area where the failure occurred, or cause damage to the magnetic head, which may eventually lead to the failure of the CK. The disk to which the CK belongs fails completely, affecting data reliability

Method used

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  • Data recovery method, storage equipment and storage system
  • Data recovery method, storage equipment and storage system
  • Data recovery method, storage equipment and storage system

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Embodiment Construction

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0063] The data restoration method provided by the embodiment of the present invention can be implemented on a storage system. figure 1 A schematic diagram of the system architecture of a data recovery method provided by the embodiment of the present invention, such as figure 1 As shown, the storage system includes a host, connection devices and ...

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Abstract

The invention provides a data recovery method, which comprises: determining the first Chunk whose failure has happened on a disk of the storage device; setting the space attribute of the first Chunk as inaccessible state; searching an idle second Chunk in the storage space of the storage equipment, wherein, the space attribute of the second Chunk is not set as inaccessible state; recovering data stored in the first Chunk; writing the recovered data into the second Chunk. When partial failure happens in the storage equipment, the reliability of data is guaranteed.

Description

technical field [0001] The present invention relates to storage technology, in particular to a data recovery method, storage device and storage system. Background technique [0002] Redundant Array of Independent Disks (RAID), also known as Redundant Array of Inexpensive Disks (RAID), referred to as hard disk array. The basic idea is to combine multiple relatively cheap hard disks to form a hard disk array group, so that the performance can reach or even exceed that of an expensive hard disk with huge capacity. Depending on the selected version, RAID has the following advantages over a single hard disk: enhanced data integration, enhanced fault tolerance, and increased processing capacity or capacity. In addition, a disk array appears to a computer as a single hard drive or logical storage unit. Traditional RAID technology is implemented between hard disks. Taking RAID5 as an example, at least three hard disks are required to implement RAID5 technology, and the data and co...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F17/30
CPCG06F11/2094
Inventor 雷延钊
Owner HUAWEI TECH CO LTD
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