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Automatic restoration method for disk array multi-level data

A disk array and automatic repair technology, applied in the computer field, can solve problems such as data cannot be written, and achieve the effect of reducing the probability of data loss and improving system reliability.

Inactive Publication Date: 2013-03-20
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The other is a bad sector caused by physical damage, and data will never be written into this sector

Method used

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  • Automatic restoration method for disk array multi-level data
  • Automatic restoration method for disk array multi-level data
  • Automatic restoration method for disk array multi-level data

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Embodiment Construction

[0024] A method for automatically repairing multi-level data of a disk array provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Since there are two main aspects on how to find bad sector faults:

[0026] 1) Error reporting through sector reading and writing;

[0027] 2) Periodically scan the hard disk to find media or data errors.

[0028] Once the present invention finds a bad sector failure, it can transfer the data at the location to the reserved area. The invention also predicts disk failures, predicts predictable disk failures by analyzing disk parameter information, and provides a basis for active data migration. as attached figure 1 As shown, a method for automatically repairing multi-level data of a disk array includes a sector read and write error repair process and a disk parameter abnormal repair process, and the repair process includes:

[0029] Step 1. Perform fault analysis on the read / w...

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Abstract

The invention provides an automatic restoration method for disk array multi-level data. A first level removes data caused by read-write errors in a bad sector into a reserved area. A second level conducts statistics towards history information of disk damages based on service condition and certain determinants attributes of the reserved area, forecasts whether the disk is out of operation by adopting an intelligent learning method, and backups the data of the disk beforehand which is probably out of operation. Compared with the prior art, the automatic restoration method for the disk array multi-level data can backup the data of the disk which is probably out of operation beforehand, thereby greatly improving reliability of a system.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method for automatically repairing multi-level data of a disk array. Background technique [0002] Disk loss of some disk array products is caused by a small number of bad sectors. The disk failure caused by a small number of bad sectors greatly reduces the reliability of the system. Almost all hard disks will have bad sectors. In terms of damage forms, bad sectors can be divided into two categories: softly damaged sectors and physically damaged sectors. Soft damaged sectors are often caused by viruses or some software, not real bad sectors, and can be repaired by formatting again. The other is a bad sector caused by physical damage, and data will never be written into this sector. The bad sectors caused by these two forms can be avoided by data transfer. [0003] In addition, there are many cases of disk loss that can be detected in advance, predicted through the cha...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F11/22
Inventor 文中领古世磊
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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