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Mixed storage backup method and system based on HDD and SSD

A hybrid storage and backup technology, which is applied in the direction of responding to the generation of errors, error detection of redundant data in calculations, input/output to record carriers, etc., can solve the problems of increasing system costs and HDD reading and writing speeds that cannot meet the needs of users Demand, data loss and other issues, to achieve the effect of improving response speed and performance requirements, high-performance and reliable storage system backup, and enhancing sequence

Active Publication Date: 2014-04-09
INSPUR BEIJING ELECTRONICS INFORMATION IND
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AI Technical Summary

Problems solved by technology

[0004] 1. In SSD-based RAID, because the lifespan of SSDs of the same type is basically the same, the lifespan of each SSD is evenly consumed. When a certain SSD fails due to the exhaustion of lifespan, other SSDs also reach the life limit, which may Multiple disk failures occur, causing data loss
[0005] 2. The RAID mechanism requires additional storage space to save the verification information. Compared with HDD, SSD is still expensive. Equipping additional SSD to store verification information will significantly increase the system cost
[0006] 3. The traditional HDD cannot meet the needs of users in terms of read and write speed, and the mixed use of the high-speed features of the current SSD always has some deficiencies in performance.

Method used

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  • Mixed storage backup method and system based on HDD and SSD
  • Mixed storage backup method and system based on HDD and SSD
  • Mixed storage backup method and system based on HDD and SSD

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Embodiment Construction

[0020] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0021] The invention provides a hybrid storage backup method based on HDD and SSD, comprising the following steps:

[0022] The linear address space of a single or multiple HDDs is divided into several equal parts; wherein, each equal part includes a data segment and an idle segment;

[0023] When a write request arrives, the HDD writes data into a corresponding data segment according to a preset policy.

[0024] Wherein, when a write request arrives, the process of the HDD writing data into the corresponding data segment according to the preset strategy is: if a single HDD backs up a single SSD and the write request arrives, the HDD writes the data into the corresponding data segment segment; wher...

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Abstract

The invention provides a mixed storage backup method and system based on an HDD and an SSD, and relates to the technical field of computer application. The method includes the following steps that linear address space of the single HDD or multiple HDDs is divided into a plurality of parts, each part comprises a data section and an idle section, and if a writing request reaches, data are written into the corresponding data section according to a preset strategy through the HDD. According to the mixed storage backup method and system, the data on the SSD can be backed up in time through the HDD, and the mixture structure achieves reliable storage system data backup which is low in price and high in performance.

Description

technical field [0001] The invention relates to the technical field of computer applications, in particular to a hybrid storage backup method and system based on HDD and SSD. Background technique [0002] In recent years, flash-based solid-state disks (SSDs) have received widespread attention and are used in current storage system backups due to their superior performance. However, due to their limited lifespan, the reliability of SSDs has been questioned; HDD arrays (RAID) Is a traditional means to improve reliability, but not suitable for SSD. First of all, the RAID mechanism requires additional storage space to store the verification information, but having additional SSDs to store the verification information will significantly increase the system cost; second, the traditional RAID mechanism tends to distribute write requests evenly among the disks. In the RAID of SSDs, this approach causes the lifespan of each SSD to wear out evenly. When a certain SSD fails due to the...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F3/06
Inventor 张砚波吴丙涛
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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