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Method for constructing disk array of horizontal grouping parallel distribution check

A technology of disk array and construction method, applied in sustainable construction, memory address/allocation/relocation, energy-saving computing, etc., can solve problems such as increasing disk invalid online time, shortening disk 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 (VTL), continuous data protection (CDP) and other applications, continuous data streams are sequentially written to the disk, and sequential storage is performed, that is, the address of the stored data It is continuous and satisfies the locality principle of storage 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 of horizontal grouping parallel distribution check
  • Method for constructing disk array of horizontal grouping parallel distribution check
  • Method for constructing disk array of horizontal grouping parallel distribution check

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Embodiment Construction

[0080] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0081] In this embodiment, the disk array SHE-RAID 5 is composed of 5 Seagate Cheetah 10K disks, and the capacity of a single disk is 300GB. The related parameters are shown in Table 2. Stripe the 5 disks, such as figure 1 As shown, it is divided into 5 strips, numbered 1-5. There are 5 storage blocks on each stripe, of which 1 storage block is a check block and the other 4 storage blocks are data blocks; the first data block of the fifth disk and the second data of the fourth disk block, the third data block of the third disk, the fourth data block of the second disk, and the fifth data block of the first disk are check blocks; other storage blocks are data blocks; check blocks are composed of The 4 data blocks in the stripe where the check block is located are obtained through XOR operation.

[0082] Table 2 Related parameters of Seagate...

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Abstract

The invention relates to a method for constructing a disk array of horizontal grouping parallel distribution check, which is suitable for continuous data storage and belongs to the technical field of redundant arrays of independent disks. Aiming at the characteristics of continuous data storage, a disk array SHE-RAID 5 of the horizontal grouping parallel distribution check is designed. The method mainly comprises the steps of: distributing storage data in the SHF-RAID 5, reading and writing the storage data, checking a generation mode of the data, buffering, prereading and optimizing the data when the data is written, switching and scheduling work states of a disk, and the like. The disk array SHE-RAID 5 has a better redundant data protecting mechanism, and can remarkably reduce the power consumption and prolong the service life.

Description

technical field [0001] The present invention relates to a method for constructing redundant arrays of independent disks (Redundant Arrays of Independent Disks, RAID), in particular to a method for constructing a disk array with horizontal grouping and parallel distributed verification, which is suitable for continuous data storage and belongs to independent disks Redundant array technical 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] Stripe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F12/06
CPCY02B60/1225Y02D10/00
Inventor 周泽湘孙志卓谭毓安武志民肖建国李焰方仑张伟涛
Owner TOYOU FEIJI ELECTRONICS
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