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Method for constructing disk array by horizontal grouping parallel concentrated verification

A disk array and construction method technology, applied in the direction of input/output to record carrier, etc., can solve the problems of increasing disk invalid online time, shortening disk service life, wasting energy, etc.

Active Publication Date: 2011-12-14
TOYOU FEIJI ELECTRONICS
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Problems solved by technology

[0011] However, in the field of continuous data storage, such as video surveillance, virtual tape library, continuous data protection and other applications, the continuous data stream is written to the disk sequentially, and the sequential storage is performed, that is, the addresses of the stored data are continuous, satisfying the storage requirements. The principle of locality of space access, so there is no I / O concurrency
Commonly used disk arrays, in order to improve data access speed and ensure I / O concurrency, disperse and store continuous data on different disks. Although only one or a few logically adjacent disks are accessed each time, most disks in the array If there is no task, it must be idling, which not only wastes a lot of energy, but also greatly increases the invalid online time of the disk, seriously shortening the service life of the disk

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  • Method for constructing disk array by horizontal grouping parallel concentrated verification
  • Method for constructing disk array by horizontal grouping parallel concentrated verification
  • Method for constructing disk array by horizontal grouping parallel concentrated verification

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Embodiment Construction

[0076] The present invention will be described in detail below in conjunction with specific embodiments.

[0077] In this embodiment, the disk array SHE-RAID4 is composed of 5 Seagate Cheetah 10K disks, and the capacity of a single disk is 300GB, and its related parameters are shown in Table 2. Among them, 1 check disk and 4 data disks, such as figure 1 shown. Divide the 5 disks into stripes and divide them into 4 stripes, numbered 1 to 4. The blocks of each stripe on the data disk are called data blocks, and the blocks of each stripe on the check disk are called check blocks; 4 data disks are evenly divided into 2 groups, and each group contains 2 data plate. The 4 data blocks of the first strip are numbered 11, 12, 13, 14; then the 4 data blocks of the second strip are numbered to 21, 22, 23, 24; ..., and so on, as The numbers of the four data blocks in the fourth strip are 41, 42, 43, and 44. All parity blocks are numbered 1 to 4 in stripe order. The check block is ob...

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Abstract

The invention relates to a method for constructing disk array by horizontal grouping parallel concentrated verification, applicable to continuous data storage, belonging to the technical field of independent disk redundant array. The invention designs and realizes a new redundant array SHE-RAID 4 according to the characteristics of continuous data storage, mainly including: layout of stored data on SHE-RAID 4, read-write of stored data, generating of verification data, data buffering and preread optimization while writing data and disk working state switching and dispatching. The disk array SHE-RAID 4 not only has good redundant data protection mechanism but also can obviously reduced power consumption, and service life is prolonged.

Description

technical field [0001] The present invention relates to a construction method of a redundant array of independent disks (Redundant Arrays of Independent Disks, RAID), in particular to a construction method of a horizontal grouping parallel centralized verification disk array, which is suitable for continuous data storage and belongs to the redundant array of independent disks. Yu array technology field. Background technique [0002] In the field of modern storage, in order to improve the reliability of stored data and improve the input and output performance of storage systems, people have designed a variety of data storage solutions, which are usually various types of redundant arrays of independent disks (Redundant Arrays of Independent Disks, RAID). By using specific hardware or software, RAID combines multiple physical storage devices such as disks to form a unified logical storage device. [0003] The technical terms commonly used in RAID are explained below: [0004...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 周泽湘孙志卓谭毓安肖建国李虓王志刚李焰沈晶方仑
Owner TOYOU FEIJI ELECTRONICS
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