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Memory array system and its data operation method

A storage array and data operation technology, applied in the direction of input/output to record carrier, etc., can solve the problems of not being able to make full use of the size of the storage space, and not being able to improve the system performance of the storage controller, and achieve the effect of flexible construction and improved system performance

Active Publication Date: 2007-10-17
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a storage array system and its System data manipulation method

Method used

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  • Memory array system and its data operation method
  • Memory array system and its data operation method
  • Memory array system and its data operation method

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Embodiment Construction

[0029] FIG. 3 is a schematic diagram of the physical structure of an embodiment of the storage array system of the present invention. As shown in FIG. 3 , the storage array system introduced in the present invention includes a logical RAID controller and multiple storage controllers (SCUs) connected to the logical RAID controller through service channels. Each SCU is connected with a hard disk group, and each hard disk group includes at least one hard disk (physical storage unit). The logical RAID controller can be implemented by software or hardware, and can be installed in the chassis of the storage array system, or on an access server connected to the storage array system. At the same time, each SCU can be installed in the same chassis, or it can be installed in different locations when disaster tolerance needs to be improved, and then connected to the service channel connected to the logical RAID controller through a network such as an IP network. Each SCU can only access...

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Abstract

The present invention relates to a data storage technology and provides a storage array system according to the defect that the exiting storage array can not effectively save storage space and can not expand with low cost. The storage array system includes a logical RAID controller and at least two connected storage controller, each storage controller is connected to at least one physical storage unit which has at least one logical storage unit, the logical controller controls at least two storage controllers and composes at least two logical storage units belonging to the physical storage unit connected to the at least two storage controllers to a logical storage array. The invention also provides a data manipulation method in the storage array system. The invention constitutes the logical storage array by logical storage unit, can conveniently expand the number of the storage controller, can fully use the storage space of the hard disk and is agility in construct mode.

Description

technical field [0001] The present invention relates to data storage technology, more specifically, to a storage array system and a data operation method thereof. Background technique [0002] Redundant Array of Independent Disks (RAID) is a storage device composed of multiple independent hard disks (physical hard disks) in a specific way. Because its storage space is much larger than that of a single hard disk, it is often used to store massive data. With the continuous deepening of research, technicians have developed multiple RAID levels, which not only provide massive storage space, but also make a lot of improvements in data read and write speed and data storage security. Currently commonly used RAID levels include RAID0, RAID1, RAID3, and RAID5. With RAID technology, we can: [0003] 1. Provide hard disk spanning function by organizing multiple hard disks into a logical volume; [0004] 2. By dividing the data into blocks (Block) and reading and writing in parallel,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 胡鹏
Owner HUAWEI TECH CO LTD
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