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RAID-based storage method and storage device

A storage device and storage block technology, applied in the direction of input/output to record carrier, etc., can solve problems such as occupying large system resources, long migration time, and reducing system reliability

Active Publication Date: 2016-10-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a RAID-based storage method and storage device, which are used to solve the problems of long migration time, occupation of a large amount of system resources, and reduction of system reliability caused by data migration in the updating of storage methods in the prior art

Method used

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  • RAID-based storage method and storage device

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Embodiment 1

[0114] In this embodiment, some hard disks in the storage array are stored in a traditional RAID manner, and some hard disks are stored in a block virtualization manner. According to business requirements, all hard disks in the storage array need to be stored in a block virtualization manner.

[0115] See Figure 4A with 4B , In order to provide a RAID-based storage method according to an embodiment of the present invention, some hard disks are stored and updated in a traditional RAID mode to all hard disks are stored in a block virtualization mode, such as Figure 4A As shown, the original part of the storage array is based on the traditional Raid and part of the storage method based on block virtualization. Among them, the storage array includes 9 hard disks, D is the hard disk label, and the 4 hard disks D1 to D4 are stored in the traditional RAID mode. , The five hard disks D5~D9 are stored according to the block virtualization method; as shown in the part outside the dashed bo...

Embodiment 2

[0124] In this embodiment, all hard disks in the storage array are stored in a traditional RAID manner. According to business requirements, all hard disks in the storage array need to be stored in a block virtualization manner.

[0125] The storage array includes 4 hard disks, and the 4 hard disks are stored in a traditional RAID manner. Specifically, the 4 hard disks are stored based on the RAID 3+1 strategy. The following describes the RAID-based storage method of the present invention in combination with the above scenarios. specifically:

[0126] Step S21: Divide the 4 hard disks stored based on the traditional RAID method into multiple Blocks;

[0127] Step S22: Add the Block to the LD space according to the first mapping relationship between the Block and the logical hard disk LD.

[0128] Step S23: Combine the above LD space into VD space according to the RAID algorithm;

[0129] Step S24: Map the VD space to each LUN according to the mapping relationship between the VD space a...

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Abstract

The embodiment of the invention provides a redundant array of independent disk (RAID)-based storage method and device. The method comprises the steps as follows: a hard disk stored according to a traditional RAID is divided into a plurality of storage blocks; a resource pool is obtained through combination of the storage blocks; and a corresponding logic unit number LUN is built through the combined resource pool, wherein the LUN occupies the same hard disk physical space as an original LUN in the hard disk stored according to the traditional RAID. Through the RAID-based storage method provided by the embodiment of the invention, updating of a virtualized storage mode of the blocks is achieved under the condition of not requiring data migration; and storage of directly converting traditional RAID data into the data capable of supporting a virtualization function is achieved, so that the reliability and the usability of an overall system in which a storage array is located are improved.

Description

Technical field [0001] The invention relates to the field of hard disk storage, in particular to a storage method and storage device based on RAID. Background technique [0002] RAID (Redundant Array of Independent Disk, Redundant Array of Independent Disk) technology was born in 1987 and was proposed by the University of California, Berkeley. The original purpose of the development was to combine small inexpensive hard disks to replace large expensive hard disks to reduce the cost of large-scale data storage. At the same time, it is also hoped that redundant information will be used so that access to data will not be lost when the hard disk fails. , So as to develop a certain level of data protection technology, and can appropriately increase the data transmission speed. It is a method of storing the same data in different places on multiple hard drives. In RAID technology, by putting the same data on multiple hard disks, input and output operations can be overlapped in a bala...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/06
Inventor 张翼
Owner ZTE CORP
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