Thin provisioning method for storage system

A technology of thin provisioning and storage systems, applied in the field of thin provisioning of storage systems, can solve the problems of manual operations, complex metadata processing, deceiving hardware, etc., achieve high performance, improve storage efficiency and flexibility

Active Publication Date: 2013-03-13
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other vendors, such as NetApp, HDS, and HP, mostly create storage resource pools from RAID groups in their thin provisioning methods. Users allocate LUNs and volumes as before, but in fact the system is just d

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  • Thin provisioning method for storage system

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Embodiment Construction

[0056] The method of the present invention is described in detail below with reference to the accompanying drawings.

[0057] The main technologies to be solved in the present invention include:

[0058] 1) Virtual address mapping

[0059] The mapping mechanism of the virtual address space to the application host can dynamically increase the space used by the storage system without interrupting data access;

[0060] 2) Capacity recycle function

[0061] Thin provisioning can dynamically reclaim the allocated space, but how to reclaim the allocated physical space and reallocate the space for reuse is a difficult problem of thin provisioning;

[0062] 3) Virtual storage space management

[0063] Dynamically expanding virtual storage pools need to maintain efficient storage access performance, so it is necessary to study performance-optimized data distribution algorithms, lightweight data migration algorithms, and efficient data balancing algorithms to minimize the impact of p...

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PUM

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Abstract

The invention provides a thin provisioning method for a storage system. Thin provisioning is generally applied to the storage system, and is used for providing a large-volume virtual driver for an operating system. According to a thin provisioning technology, a volume space which surpasses a practical space can be provided for an upper layer in a virtual way, i.e., the available volume of the operating system is assumed to be larger than the practically provided volume. Data in enterprises increase gradually instead of getting too many at the start, so that the utilization ratio of the storage volume can be increased by adopting thin provisioning. A large-volume virtual driver can be provided for the operating system by adopting a thin provisioning storage scheme. The operating system is provided with a large magnetic disk space during distribution of the magnetic disk space, so that enterprises can consider increasing storage equipment stepwise without adjusting the operating system along with the increase of the enterprise data volume. The hot plug function of the storage equipment is realized, and the storage efficiency and flexibility of magnetic disk equipment can be improved.

Description

technical field [0001] The invention relates to a server storage system, in particular to a method for automatic thin provisioning of a storage system. Background technique [0002] like figure 1 As shown, simply speaking, there may not be so many actual physical storage devices, and the operating system thinks that there is such a large storage space. Therefore, thin provisioning must be able to support dynamic expansion. Before the actual physical storage device space is full, use the dynamic expansion method of thin provisioning to expand the actual storage space, so as to ensure the normal use of the user system. Otherwise, the operating system uses non-existing storage space because it does not know the actual physical capacity, which will cause immeasurable and serious problems. [0003] At present, thin provisioning has been widely used in storage systems of foreign storage manufacturers such as EMC, IBM, HDS, and HP 3PAR, but domestic manufacturers are still weak i...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 王恩东张宇文中领
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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