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Data reading method and apparatus based on RAID disk array

A RAID disk and data reading technology, applied in the storage field, can solve the problem of low data reading efficiency, achieve the effect of improving data reading efficiency, reducing the swing range and swing frequency of the magnetic head

Active Publication Date: 2017-07-18
济南宇视智能科技有限公司
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Problems solved by technology

When performing video playback on multiple monitoring channels at the same time, according to the balance strategy described above, it is necessary to read data between each logical partition on each member disk at the same time, then, the magnetic head of each member disk in the RAID disk array Will oscillate repeatedly across the entire range of the disk, resulting in inefficient data reading

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  • Data reading method and apparatus based on RAID disk array
  • Data reading method and apparatus based on RAID disk array
  • Data reading method and apparatus based on RAID disk array

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Embodiment Construction

[0048] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0049] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The present application provides a data reading method and apparatus based on a RAID disk array. The method comprises: determining target logical partitions corresponding to to-be-read video data, wherein the number of the target logical partitions is M, M is a natural number that is greater than 1 and is not greater than S, S is the total number of logical partitions included in a RAID disk array, and S is not less than 2; assigning the target logical partitions to each mirror group; and reading video data in the assigned target logical partition on a member disk of each mirror group. Application of the method can improve data reading efficiency during multi-channel video playback in a video surveillance application scenario.

Description

technical field [0001] The present application relates to the field of storage technology, in particular to a data reading method and device based on a RAID (Redundant Arrays of Independent Disks, redundant array of independent disks) disk array. Background technique [0002] RAID technology combines multiple independent physical disks in different ways to form a virtual disk. By adopting the RAID technology, the data reading rate can be increased, and the reliability of the data can be improved. [0003] In the prior art, when there are more than two member disks that are mutually redundant mirrors in the RAID disk array, when the RAID disk array receives a read IO, a balancing strategy can be adopted to split the read IO so that the split read commands are balanced Pointing to each member disk in the RAID disk array can make the read pressure on each member disk more balanced. [0004] However, in a video surveillance application scenario, multiple logical partitions can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0611G06F3/0644G06F3/0689
Inventor 王丽红
Owner 济南宇视智能科技有限公司
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