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RAID6 level mixed disk array, and method for accelerating performance and improving reliability

A disk array, level technology, applied in the direction of input/output to record carrier, generation of response error, error detection of redundant data in operation, etc., can solve the problem of unsatisfactory life and system energy consumption, RAID6 array write Issues such as poor performance and reliability

Active Publication Date: 2012-09-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] One of the purposes of the present invention is to propose a RAID6-level hybrid disk array, which solves the problems of poor write performance and reliability of the current RAID6-level array, unsatisfactory life and system energy consumption

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  • RAID6 level mixed disk array, and method for accelerating performance and improving reliability
  • RAID6 level mixed disk array, and method for accelerating performance and improving reliability

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0051] Such as figure 1As shown, the RAID6 hybrid disk array 210 is composed of solid state disks 210.1, 210.2...210.n and part of the space 210.n+1, 210.n+2 of two disks, 210.1, 210.2...210.n are used As a data disk, 210.n+1 and 210.n+2 are used as a check disk, and the remaining parts of the disk 220.1 and 220.2 form a mirror log area 220, which is used to absorb write data, and the position of the data block in the mirror log area 220 The index information is recorded in the block log linked list 230 , which is stored in the non-volatile memory (NVRAM) in the RAID6 hybrid disk array 210 .

[0052] The RAID6 hybrid disk array 210 also includes a management control unit.

[0053] The management control unit includes a management module 110 , a monitoring module 120 , a data distribution module 130 , a data recovery module 140 and a data recovery module 150...

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Abstract

The invention discloses an RAID6 level mixed disk array, comprising a plurality of solid-state disks, two disks and a management control unit, wherein the plurality of solid-state disks are used for storing data; partial space in each disk is used as check disk space; the residual space is used as an image log area; the position index information of the data block in the image log area is recorded in one log chain table; and the management control unit is used for controlling access of the upper application program to the array, and specifically includes a monitoring module, a data distribution module and a data recovering module, wherein the monitoring module is used for monitoring I / O access of the application program and identifying write data; the data distribution module is used for distributing the write data identified by the monitoring module to the solid-state disk or the image log area; and the data recovering module is used for recovering the write data to the solid-state disk from the image log area. The invention also discloses a method for accelerating performance and improving reliability of the array. The array and the method can be used for various storage environments with unpredictable load, so that the array and the method are suitable for constructing a storage system with high performance and high reliability.

Description

technical field [0001] The invention belongs to the technical field of disk array performance optimization, and in particular relates to a RAID6 level disk array and a performance optimization method thereof. Background technique [0002] With the development of computer technology and network communication technology, the degree of informatization is getting higher and higher, and people's requirements for data reliability are getting higher and higher. Disk array RAID (Redundant Array of Independent Disks) is a typical device in the field of reliable storage systems. The working principle and characteristics of disk arrays: the basic structural feature of RAID is striping, which binds two or more physical disks into groups , forming a separate logical disk. [0003] The RAID structure has the following typical standards. RAID0 level: Disk array with no redundancy and no parity. Data is distributed on each disk drive at the same time, without fault tolerance, the read an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/14
Inventor 曾令仿冯丹陈俭喜刘文国
Owner HUAZHONG UNIV OF SCI & TECH
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