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Storage management method, device, and computer-readable medium

A storage device and storage management technology, which is applied in the field of storage management, can solve problems such as difficulty in reducing reconstruction time, reconstruction time being limited by write input/output bandwidth, etc.

Active Publication Date: 2021-06-08
EMC IP HLDG CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since traditional RAID technology rebuild time is limited by the write I / O bandwidth of the hot spare physical disk drive
Therefore, for traditional RAID technology, the write I / O bandwidth of the hot spare physical disk drive has become a bottleneck, making it difficult for traditional RAID technology to reduce the rebuild time

Method used

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  • Storage management method, device, and computer-readable medium
  • Storage management method, device, and computer-readable medium
  • Storage management method, device, and computer-readable medium

Examples

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Embodiment Construction

[0017] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] As used herein, the term "comprise" and its variants mean open inclusion, ie "including but not limited to". The term "or" means "and / or" unless otherwise stated. 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 further embodiment". The terms "first", "second", etc. may refer to di...

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PUM

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Abstract

Embodiments of the present disclosure relate to storage management methods, devices and computer-readable media. The method can realize the determination of the mapping between the logical area and multiple storage devices in the storage pool without storing the mapping relationship table. In addition, the method can also record a new mapping relationship after a storage device fails, and restore the original mapping relationship after the faulty device is replaced.

Description

technical field [0001] Embodiments of the present disclosure relate generally to storage management, and more particularly, to storage management methods and devices. Background technique [0002] Redundant Array of Independent Disks (RAID) is a data storage virtualization technology that combines multiple physical disk drives into a single logical unit to increase data redundancy, reliability and performance. Data is distributed across multiple physical disk drives using one of several RAID levels such as RAID 0-RAID50, etc., depending on the level of redundancy and performance required. Take traditional RAID 5 as an example, which includes block-level striping with distributed parity. Parity information is distributed across multiple physical disk drives. In the event of a single physical disk drive failure, subsequently read data may be calculated according to distributed parity (eg, by exclusive OR (XOR) operation) so that data is not lost. Also, a hot spare physical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0611G06F3/0631G06F3/064G06F3/0689G06F12/0246G06F2212/7201G06F11/2094G06F2212/657G06F2212/1041G06F12/10G06F2201/82
Inventor 韩耕李卫华高健康剑斌龚绍钦
Owner EMC IP HLDG CO LLC
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