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Data storage method, data storage equipment and distributed storage system

A distributed storage and data storage technology, applied in the computer field, can solve the problems of high overhead of redundant copies, high storage service costs, and reduced data reliability, saving storage space, reducing the proportion of redundant data, and ensuring data security. The effect of reliability

Inactive Publication Date: 2014-04-02
BEIJING QIHOO TECH CO LTD +1
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Problems solved by technology

[0009] From the realization of the existing technology, a data record is stored in Cassandra. In fact, three data copies need to be stored, which takes up a lot of storage space. The overhead of redundant copies is too large, resulting in waste of space and high storage service costs.
And if the number of copies is reduced, such as changing to two copies of storage, the reliability of the data will be greatly reduced

Method used

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  • Data storage method, data storage equipment and distributed storage system
  • Data storage method, data storage equipment and distributed storage system
  • Data storage method, data storage equipment and distributed storage system

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Embodiment Construction

[0056] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0057]In order to solve the existing problems of using multi-copy storage in the distributed storage system in the prior art, excessive redundancy copy overhead and high storage service cost, the embodiment of the present invention provides a data storage solution, in the distributed storage system such as The access node of the Cassandra system divides the data block into several data fragments, and calculates several verification ...

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Abstract

The invention discloses a data storage method, data storage equipment and a distributed storage system. The method, the equipment and the system belong to the technical field of computers. The data storage method comprises the steps that access nodes of the distributed storage system cut a data block which is written in by a user into a plurality of data fragments with preset sizes; a plurality of check fragments corresponding to the data fragments which are obtained by cutting are calculated through a redundancy check algorithm; the data fragments and the check fragments are stored into the data nodes of the distributed storage system, and each data fragment and each check fragment only store one copy. According to the data storage method, the data storage equipment and the distributed storage system, the proportion of redundant data can be reduced on the premise of ensuring data reliability, so as to save the storage space.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a data storage method, a data storage device and a distributed storage system. Background technique [0002] Cassandra is a typical distributed storage system with a ring structure without a central node and implemented by distributed hash table (Distributed Hash Table, DHT) technology. DHT is a distributed storage technology. Without the need of a central node, each storage node is responsible for a small range of routing and is responsible for storing a small part of data, thereby realizing the addressing and storage of the entire DHT distributed cluster. [0003] Cassandra's data storage space can be abstracted into a ring structure, and data is dispersed in this ring storage space through hash. Each node of the distributed storage system is responsible for managing a certain continuous range (also called Range) on this ring storage space, and the data falling in this Range...

Claims

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Application Information

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IPC IPC(8): G06F12/06G06F11/08
Inventor 王锋
Owner BEIJING QIHOO TECH CO LTD
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