Data recovery method for RAID6

A recovery method and data technology, applied in the field of information security, can solve problems such as slow recovery speed and low accuracy rate, and achieve the effects of fast speed, high success rate of data recovery, and fast data reorganization

Inactive Publication Date: 2015-08-26
XLY SALVATIONDATA TECHNOLOGY INC
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, there are some methods for reorganizing and restoring RAID 6 data on the market, but these methods require professionals to complete the operation, the recovery speed is slow, and the correct rate is not high

Method used

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  • Data recovery method for RAID6
  • Data recovery method for RAID6

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0047] A data recovery method for RAID6, comprising the following steps:

[0048] S1: Retrieve the DBR of the NTFS partition in all disks;

[0049] S2: Retrieve the starting position of the MFT table in the DBR;

[0050] S3: Calculate the array stripe size;

[0051] S4: Calculate the starting position of the array;

[0052] S5: determine the efficacy area, and reorganize the array;

[0053] S6: Recover lost data.

[0054] The detailed steps of S1 are as follows:

[0055] S101: search upwards in units of sectors, and find the sector offset "512=509";

[0056] S102: Determine whether there is a DBR tail feature "0055AA" at this position, if so, perform S103, if not, perform S101 starting from this position;

[0057] S103: Determine whether the sect...

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Abstract

The invention discloses a data recovery method for RAID6. The data recovery method comprises the following steps: S1, retrieving DBR for NTFS partitioning in all discs; S2, retrieving the start position of an MFT sheet in DBR; S3, calculating the size of an array band; S4, calculating the start position of an array; S5, judging a check region, and regrouping the array; S6, recovering lost data. The data recovery method for RAID6 has the benefits that DBR characteristic and MFT characteristic can be utilized to perform quick scan and obtain a whole array structure, data in a data region and check region are accurately distinguished, data matching regrouping is performed by utilizing a common array arrangement manner of RIAD6, and lost data in one hard disc and two hard discs can be recovered. The speed of analyzing the whole array structure is high, the data regrouping speed is high, and the success rate of data recovery is high.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a data recovery method for RAID6. Background technique [0002] RAID6 refers to an independent hard disk structure with two distributed parity check codes. The two independent check systems use different algorithms, and the data reliability is very high. It is mainly aimed at occasions where data must not be wrong, such as enterprises and institutions with large storage resources, such as audio-visual multimedia digital content creation companies, personal audio-visual editing digital content studios, securities, banking and other financial industries, digital monitoring systems (DVR), network monitoring system (NVR), etc. [0003] If RAID6 fails, the consequences are often disastrous. Therefore, reorganization and data recovery for RAID6 are essential. At present, there are some methods for reorganizing and restoring RAID 6 data on the market, but these methods r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/14
Inventor 梁效宁
Owner XLY SALVATIONDATA TECHNOLOGY INC
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