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Storage management method and system

A storage management and data block technology, applied in the field of storage management, can solve the problems of reducing the I/O performance of the storage system, unbalanced heating of storage devices, and reducing I/O performance, etc.

Active Publication Date: 2019-01-15
EMC IP HLDG CO LLC
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Problems solved by technology

[0003] Although the above-mentioned linear mapping method has the advantages of simple algorithm, etc., since the user I / O after linear mapping is usually only concentrated in some RAID segments, and cannot be evenly distributed in the entire disk space, the heat generation of the storage device is unbalanced. And also significantly reduce the I / O performance of the entire storage system, especially significantly reduce the performance of I / O per second (IOPS)

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Embodiment Construction

[0020] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the drawings show preferred embodiments of the present disclosure, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0021] The term "including" and its variants as used herein means open-ended inclusion, that is, "including but not limited to". Unless specifically stated otherwise, the term "or" means "and / or". The term "based on" means "based at least in part on." The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." T...

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Abstract

A storage management method and system are disclosed. The storage management method includes dividing data to be written into a plurality of data blocks of a predetermined size in response to receiving a write request, the plurality of data blocks having respective logical block addresses; uniformly mapping the plurality of data blocks into a plurality of RAID segments of a RAID based on the logical block address; mapping the plurality of data blocks in the plurality of RAID segments into a disk such that the plurality of data blocks are distributed in the disk in order of magnitude of the logical block addresses. The plurality of data blocks in the RAID segments are mapped into a disk such that the plurality of data blocks are distributed in order of magnitude of the logical block addresses in the disk.

Description

Technical field [0001] This disclosure relates to storage management and optimization. More specifically, the present disclosure relates to storage management methods, systems, computer-readable storage media, and computer program products. Background technique [0002] In order to better manage and optimize storage, traditional computer systems usually pool several disk partitions into a storage pool, and then establish a redundant array of independent disks (RAID) on the storage pool, and use the RAID mapping table (RMT) in the RAID area The linear logical block address (LBA) mapping is performed between the RAID extents and the logical unit (LUN) to realize the mapping of user I / O data to the disk. [0003] Although the above linear mapping method has the advantages of simple algorithm, but because the user I / O after linear mapping is usually only concentrated in part of the RAID section, and cannot be evenly distributed in the entire disk space, the heat of the storage device ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/064G06F3/0689G06F3/0604
Inventor 康剑斌李雄成高健韩耕徐鑫磊
Owner EMC IP HLDG CO LLC
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