Method and device for data storage

A technology for data storage and storage solutions, applied in the direction of input/output to record carriers, etc., can solve problems such as complex engineering implementation, increased data recovery calculation costs, etc., achieve flexible selection, realize data hierarchical layout technology, and reduce hardware purchase costs Effect

Active Publication Date: 2014-04-23
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Abstract
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Problems solved by technology

If the quality of the medium storing the data block is worse than the QoS of the check block, the damage probability of the data block will be greater than that of the check block, thereby increasing the heavy calculation cost of data recovery, and the engineering implementation is also more complicated

Method used

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  • Method and device for data storage
  • Method and device for data storage

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] figure 1 It shows a schematic diagram of a processing device for data storage according to one aspect of the present invention; wherein, the processing device includes means for determining corresponding one or more candidate storage scheme information according to a data storage request (hereinafter referred to as "candidates") Apparatus 1"), wherein, the candidate storage scheme information satisfies the storage service requirements corresponding to the data storage request; and is used to select from the one or more candidate storage schemes according to the performance index information corresponding to the candidate storage scheme information A device for determining the corresponding preferred storage plan information in the plan information (hereinafter referred to as "preferred device 2"); a device for processing the data storage request accord...

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Abstract

The invention aims to provide a method and a device used for data storage. The processing device determines one or a plurality of corresponding candidate storage scheme information according to data storage requests, and determines corresponding optimized storage scheme information according to performance index information corresponding to the candidate storage scheme information, so as to process data storage requests. Compared with the prior art, according to different hardware medium service qualities, data is distributed to proper storage mediums according to the degree of importance, so that the data corruption and loss probabilities can be reduced; meanwhile, the service quality of the medium is changed in real time according to a practical situation, and potential faults can be earlier found by using the device, so that the damage caused by imminent hardware trouble can be prevented; therefore, a data grading topology which senses the storage medium service qualities can be realized, the influence on storage performance and reliability of the storage system caused by the different storage medium service qualities can be eliminated, and a strategy for controlling the storage cost can be realized.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a technology for data storage. Background technique [0002] The medium of the storage system is affected by many factors such as purchase specifications, supply batches, operating environment, usage mode, service life, etc., and presents different performance, reliability and other service quality differences to the upper system. These real heterogeneities cause storage systems to present significantly different quality of service when laying out data on storage media. Especially for systems that use multiple copies to ensure reliability, different copy placement methods will affect the data reading speed and reliability. [0003] At present, the reliability design of the storage system in the existing methods is based on the assumption that the quality of service (QoS) of the underlying storage medium is the same. Among them, there are mainly two methods: [0004] Method 1: Use mu...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 覃安胡殿明刘俊杨文君谭待
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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