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Distributed storage method and device

A technology of distributed storage and storage space, applied in the field of distributed storage

Active Publication Date: 2010-06-16
JINGJIANG SHENJU VESSEL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The storage of data blocks also incurs a large amount of communication overhead, because the client needs to frequently search for the requested data blocks and transmit scheduling signaling between replica nodes

Method used

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  • Distributed storage method and device
  • Distributed storage method and device

Examples

Experimental program
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Embodiment Construction

[0021] refer to figure 1 , is a network structure diagram of an embodiment of a distributed storage system, the system includes a central server and multiple replica nodes connected to the central server. The central server is used to divide its stored content into data blocks of equal size, or after the content is divided into multiple data segments, each data segment is divided into data blocks of equal size, and sent to the selected replica node Sending an instruction to store the content by the replica node, where the instruction to store the content carries information about the content. Generally, according to the working principle of distributed storage, the central storage selects multiple replica nodes to store multiple contents.

[0022] The copy node is used to allocate storage space for the content according to the information of the content and the available storage space on the copy node after receiving the instruction to store the content by the copy node; calc...

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Abstract

The invention discloses a distributed storage method, a distributed storage device and a distributed storage system. A replica node receives an instruction transmitted by a center server for storing the content by the replica node, wherein the instruction for storing the content carries the information of the content; the replica node distributes a storage space for the content according to the information of the content and available storage space on the replica node; the replica node calculates a storage coefficient K of the content on the replica node, wherein the storage coefficient K is determined by the size of the content and the storage space distributed for the content; and the replica node randomly downloads and stores a data block divided by the content from the center server at a ratio of 1 / K. Therefore, the storage efficiency is improved, the search and scheduling complexity of a client is reduced, and the network overhead is reduced.

Description

technical field [0001] The invention relates to an internet storage method, in particular to a distributed storage method. Background technique [0002] The traditional data storage mechanism is a centralized storage method, and the data is stored in the server of the content provider. In order to cope with the growing demand of storage space, content providers often need to purchase new storage devices to expand the storage capacity of their servers. [0003] Traditional multimedia content providers use a centralized client-server model to deliver multimedia content to client nodes. In order to improve the quality of service QoS, the provider usually deploys multiple CDN servers Content Distribution Network with the same copy of the original multimedia data in the network of some major ISPs (Internet Service Provider, Internet Service Provider). Due to strict QoS requirements, these CDN servers are also subject to expensive maintenance overhead. [0004] One possible app...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 陈浩华黄哲曾宪国
Owner JINGJIANG SHENJU VESSEL MFG
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