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Network RAID (redundant array of independent disk) system

A redundant disk array and network technology, applied in the direction of input/output to the record carrier, etc., can solve the problems of heavy system load and long response time, and achieve the effect of short response time, high storage reliability, and good read and write performance.

Active Publication Date: 2011-05-11
INST OF COMPUTING TECH CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to overcome the defects of long response time and heavy system load of the existing network independent redundant disk array system, thereby providing a network independent redundant disk array system with high reliability and short response time

Method used

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Embodiment Construction

[0069] Before describing the present invention in detail, the relevant concepts involved in the present invention will be described first.

[0070] Application data: The data involved in the upper-layer application software's read or write operations.

[0071] Redundant data: the duplication of data written by the upper layer application software, which is copy data.

[0072] Check block data: the result of using the check algorithm to calculate the redundant data of different nodes.

[0073] Active data: Active data refers to data that has been read or written in the most recent period according to the principle of storage locality.

[0074] Inactive data: Refers to data that has not been read or written in the most recent period relative to active data according to the principle of storage locality.

[0075] The present invention will be described below in conjunction with the accompanying drawings and specific embodiments.

[0076] exist figure 1 A minimum embodiment of...

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Abstract

The invention provides a network RAID (redundant array of independent disk) system, comprising at least three storage nodes, wherein each storage node comprises at least one associated storage node. Each storage node comprises a data volume used for storing application data, an active data volume used for storing partial application data, a mirror image subset used for receiving an application read-write request and a data management subset used for managing data relation in the data volume and the active data volume as well as a redundancy calculating subset used for calculating the redundancy of a verification block, a verification volume used for storing the data of the verification block, a caching volume used for storing latterly modified write active data and a caching subset used for receiving a write active data request and substituting non-active data to the redundancy calculating subset. The network RAID system provided by the invention also provides a data processing method applied to the network RAID system. The invention has the advantages that the response time for reading a request is short, the read-write performance is good, and the storage reliability is higher.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a network independent redundant disk array system. Background technique [0002] In the data-centric information age, how to properly and effectively protect data is one of the core issues of storage systems. Business-critical requirements in finance, healthcare, and military require that information never be lost. The most important task of the storage system is to ensure that the stored information will not be lost no matter what failure occurs, and try to provide high-quality data services without interruption. The destruction and loss of data information not only affects the business continuity of the enterprise, but even greatly threatens the survival of the enterprise. [0003] In order to ensure the security of the data stored in the disk, those skilled in the art have proposed Redundant Array of Independent Disk (RAID, Redundant Array of Independent Disk) technology, which c...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 许鲁那文武刘振军孙振元
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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