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Computer system and method for controlling same

一种计算机系统、控制器的技术，应用在计算机系统领域，能够解决均等打破等问题，达到迅速且可靠均等化的效果

Active Publication Date: 2012-06-20
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The storage device equalizes the allocation of storage areas to multiple pool volumes, but there is a problem that this equality is broken over a long period of time.

Method used

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  • Computer system and method for controlling same
  • Computer system and method for controlling same
  • Computer system and method for controlling same

Examples

Experimental program
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Embodiment Construction

[0059] Next, embodiments of the present invention will be described. figure 1 It is a hardware block diagram showing a first example of the computer system of the present invention. The computer system includes a host computer 10, a management device 20, and a storage device 30 connected to these. Storage devices are also known as storage systems, or storage subsystems.

[0060] The host computer 10 accesses logical storage resources of the storage device 30 . The management device 20 manages the structure of the storage area of ​​the storage device 30 . The storage device 30 stores data in a storage area set in the physical device 34 .

[0061] The host computer 10 includes an input unit 110 , an output unit 120 , a CPU 130 , a memory 140 , a disk adapter 150 , a network adapter 160 , and a disk drive 170 . The input unit 110 is a unit that accepts input from an administrator or the like who operates the host computer 10 . The input unit 110 is constituted by, for exampl...

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PUM

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Abstract

A computer system enabling quick and infallible equalization of storage capacities of real logical areas for dynamically providing a storage capacity to a virtual logical area is provided. The computer system can maintain the balance of the storage capacities by moving a storage area from pool volumes to others when a pool volume is added to a pool while the system is dynamically allocating a storage area to a virtual volume in response to an access by the host device.

Description

technical field [0001] The present invention relates to computer systems, and more particularly, to computer systems that dynamically allocate storage capacity to host devices. Background technique [0002] Currently, there are computer systems that provide large-scale data storage services to host devices. This system is known to include a host device, a storage device connected to the host device, and a management device for the storage device. [0003] The storage device manages multiple hard disks in a RAID (Redundant Array of Independent / Inexpensive Disks) mode. Furthermore, the physical storage areas possessed by a large number of hard disks are logicalized and provided to the host device as logical volumes. The host device accesses the logical volume to request read / write of data. [0004] As one of such logicalization techniques, there is a technique called thin provisioning. The storage device sets a virtual volume that does not have a physical storage area to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/00
CPCG06F3/0644G06F12/023G06F3/0689G06F3/0665G06F11/1076G06F11/00G06F3/0605G06F2206/1012
Inventor 井上浩伸井上信太郎高田丰
Owner HITACHI LTD