Fault-tolerance method and system for redundant array of independent disk

A disk array and disk technology, applied in the computer field, can solve the problem of high disk update frequency, reduce the frequency of kicking disk, and ensure the effect of reliability and integrity

Active Publication Date: 2010-11-17
NEW H3C TECH CO LTD
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Problems solved by technology

[0005] The present invention provides a disk array fault-tolerant method and its device, which are used to solve the problem of high update frequency of disks in the disk array in the prior art

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  • Fault-tolerance method and system for redundant array of independent disk
  • Fault-tolerance method and system for redundant array of independent disk
  • Fault-tolerance method and system for redundant array of independent disk

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Embodiment Construction

[0032] Because the underlying RAID array in the existing solution does not distinguish the key data (such as super block, primary index, and secondary index) from recording data and organizing recording, when the recording data is read or / and written (hereinafter described as read / write, or read and write) errors, according to the requirements of RAID integrity, the disk with the read or write I / O error will be removed from the RAID immediately, and a new disk will be required to be added, thereby increasing the replacement frequency of disk spare parts.

[0033] In order to solve the above technical problems, considering that users do not have high requirements for the integrity of surveillance video data, the occasional loss of a frame of video data will not affect the overall video image quality. Therefore, the embodiment of the present invention provides an application The disk array fault-tolerant solution of the video surveillance system distinguishes the key data (such a...

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Abstract

The invention discloses a fault-tolerance method and a fault-tolerance system for a redundant array of independent disk (RAID), which are applied to video monitoring systems. The method comprises the following steps of: when data is read or written incorrectly, determining a storage site of the data which is read or written incorrectly; when the storage site is determined to be positioned in a video-monitoring picture-recording content data storage area, acquiring the number of data blocks of which the data is read or written incorrectly in a disk in which the storage site is positioned; and when the number of the data blocks of which the data is read or written incorrectly reaches a set threshold value, removing the disk from the RAID in which the disk is positioned. The fault-tolerance method and the fault-tolerance system for the RAID can be used for reducing the frequency of replacing disks of the RAID on the premise of ensuring the integrality of the video-monitoring picture-recording data to some extent.

Description

technical field [0001] The invention relates to computer technology in the field of communication technology, in particular to a disk array fault-tolerant method and system thereof. Background technique [0002] In the field of video surveillance, with the continuous decline of disk prices and the continuous increase of disk capacity, video surveillance video data is currently mostly stored on disk in a circular manner. Surveillance video data storage generally requires 7*24 hours of uninterrupted storage. In order to ensure the reliability and integrity of surveillance video data, a certain fault-tolerant combination of disks is generally adopted in RAID array mode, so that when one of the hard disks fails, Data reconstruction can be performed through other disks without losing the surveillance video data on the array. [0003] In order to effectively manage and retrieve surveillance video data, it is necessary to organize the video data. figure 1 An organization mode of ...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F11/07
Inventor 赵汉表张晓琳
Owner NEW H3C TECH CO LTD
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