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Multi-disk-cabin hard disk array system consisting of double-layer controller

A disk array and controller technology, applied in the direction of input/output to record carrier, etc., can solve the problems of low cost performance, affecting system use, high software and hardware costs, etc., and achieve the effect of shortening time, reducing cost and facilitating management

Active Publication Date: 2011-06-22
NO 15 INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: a disk or subsystem of the disk array system in the prior art has a problem, and the entire disk array system needs to be restored, which takes a long time to restore data and affects the use of the system; at the same time, due to the large number of Hard disk, when there is a problem with the hard disk, it is difficult for the administrator to find the location of the problem disk and the RAID subsystem to which it belongs; the mass data of the user needs a high-performance disk array to store, the hardware and software costs are high, and the cost performance is low. Propose a disk array system that can quickly restore the data of the disk array, has better security and reliability, is easy to manage and has high cost performance

Method used

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  • Multi-disk-cabin hard disk array system consisting of double-layer controller
  • Multi-disk-cabin hard disk array system consisting of double-layer controller
  • Multi-disk-cabin hard disk array system consisting of double-layer controller

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Embodiment 1

[0033] An embodiment of the multi-cabin disk array system composed of double-layer controllers according to the present invention is given below, as figure 1As shown, a multi-bay disk array system composed of double-layer controllers includes a RAID main system and n RAID subsystems, where n is the number of RAID subsystems, which can be set according to needs. Under the storage condition, generally 2-10 are selected, and dozens of them can be set under the condition of massive data storage, and 3 are selected in this embodiment. The RAID main system is connected to all RAID subsystems through a hard disk interface, where the hard disk interface is a SATA port, and SAS, FC and other interfaces can also be used. Described each RAID subsystem comprises at least one hard disk and a controller, and described hard disk is used for storing data, and here hard disk can be set to a plurality of according to different situations, needs at least two disks as making RAID0, RAID5 at least...

Embodiment 2

[0035] Another specific implementation is given here, such as figure 2 As shown, the multi-bay disk array system composed of double-layer controllers uses a 5U (U is the unit of measure for cabinet size) structure for illustration. The entire disk array has 20 1TB SATA disks, which are divided into 4 Disk warehouse, which forms 4 RAID subsystems, each disk warehouse has a 5-channel hardware RAID controller, and the RAID subsystem is connected to the RAID main system through the disk interface on the backboard of the RAID main system. After configuration Provide a hardware device equivalent to a large disk to the RAID main system. The RAID main controller manages the storage space provided by the 4 disk warehouses in a unified manner, and provides a unified storage space to the outside after the RAID level is set.

[0036] This example can tolerate multiple disk failures. For example, disk warehouse 1 is configured with RAID1 to tolerate a disk failure, disk warehouse 2 is con...

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Abstract

The invention discloses a multi-disk-cabin hard disk array system consisting of a double-layer controller. The system comprises an RAID (Redundant Array of Independent Disk) main system and at least one RAID subsystem, wherein the RAID main system is connected with all RAID subsystems through hard disk interfaces; each RAID subsystem comprises at least one hard disk and a controller; the controller is used for managing the hard disk, protecting hard disk data and providing a virtual storage space for the RAID main system; the RAID main system comprises a controller for uniformly managing storage spaces, provided by all RAID subsystems, serving as independent hard disks; and different RAID levels are configured to provide storage spaces for a user. By adopting the multi-disk-cabin hard disk array system, the technical problems of long recovery time and influence on system usability, caused by the need of calculating relevant data of an entire hard disk array for data recovery when one hard disk or subsystem in the hard disk array system fails, in the prior art are solved, and the system is particularly suitable for storing mass data.

Description

technical field [0001] The invention relates to a disk array technology, in particular to a low-cost disk array technology with fast recovery, high availability and multiple disk warehouses. Background technique [0002] With the rapid development of IT technology, storage technology has entered a stage of rapid development. The principle of Redundant Arrays of Inexpensive Disks (RAID) is to use the array method to make a disk group, and cooperate with the design of scattered data arrangement to improve data security. With the development of RAID, multiple levels such as RAID0, RAID1, RAID0+1, RAID1+0, RAID3, RAID5, RAID6, and RAID7 have appeared successively. Most of them use data redundancy mechanisms to protect data security and improve system performance. [0003] At present, with the exponential growth of data, the disk array storage space has begun to develop to the PB level, and the massive data has brought many complicated problems. First, the recovery of massive d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 阳小珊胡怀湘易奇
Owner NO 15 INST OF CHINA ELECTRONICS TECH GRP
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