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Data storage method and device

A data storage and data block technology, applied in the storage field

Active Publication Date: 2016-07-13
HUAWEI DIGITAL TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for data storage, which solves the problem that the existing RAID technology provides maximum fault tolerance of two hard disks

Method used

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the existing RAID technology, the fault tolerance capability of at most two hard disks can only be provided, that is, when the data of more than two hard disks is lost, the lost data cannot be recovered through the existing RAID technology.

[0037] In order to solve the above problems, combined with figure 1 , the embodiment of the present invention provides a data storage method, the method is applied to a storage array, the storage array contains ...

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Abstract

An embodiment of the invention provides a data storage method and device and solves the problem that existing RAID (redundant array of inexpensive / independent disks) technologies at most provide fault-tolerant ability of two hard disks. The method is applied to a storage array, and the storage array contains n storage devices; the method comprises steps as follows: to-be-stored data are divided into M data blocks, wherein M is shown in the specification, and m is a preset positive integer smaller than (n-1); at least (M-n+1) data blocks are stored in each storage device, any (m+1) storage devices of the n storage devices at least contain one identical data block, and the identical data blocks contained in the (m+1) storage devices, every two of which are different, at least contain one different data block. The method is applicable to the technical field of storage.

Description

technical field [0001] The present invention relates to the technical field of storage, in particular to a data storage method and device. Background technique [0002] As the requirements for data security are getting higher and higher, and the speed of ordinary integrated drive electronics (Integrated Drive Electronics, IDE) hard disk is low, the performance is not stable enough, and it cannot be used to store key data, and efficient, stable and reliable small computer systems Interface (SmallComputerSystemInterface, SCSI) hard disks are expensive, and many small and medium-sized enterprises cannot afford them. [0003] Therefore, Redundant Array of Inexpensive / Independent Disks (Redundant Array of Inexpensive / Independent Disks, RAID) was conceived. The basic principle of RAID is to combine multiple independent hard disks in different ways to form a disk group, thus providing higher storage capacity than a single hard disk. storage performance. [0004] Different combina...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/14
Inventor 李方翔
Owner HUAWEI DIGITAL TECH SUZHOU