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Method and device for rebuilding raid

A device and logic unit technology, applied in the field of reconstruction of redundant arrays of independent disks, can solve problems such as failure reconstruction effect, adverse impact of cost, consumption, etc., and achieve the effect of improving reconstruction performance and efficiency

Active Publication Date: 2021-07-16
EMC IP HLDG CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional RAID, the RAID group (RG) will consume all the disk space in the group, which will have a negative impact on the effect and cost of fault reconstruction

Method used

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  • Method and device for rebuilding raid
  • Method and device for rebuilding raid
  • Method and device for rebuilding raid

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Embodiment Construction

[0026] Hereinafter, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that these figures and descriptions are merely as an exemplary embodiment. It should be noted that the structural embodiments of the structures and methods disclosed herein are readily apparent, and these alternative embodiments may be used without departing from the principles of the present disclosure.

[0027] It is to be understood that these exemplary embodiments are given only to enable those skilled in the art to better understand the present disclosure, and is not limited in any way.

[0028] The terms "including", "including", "include" and similar terms should be understood as an open term, i.e., "including / inclusive, but not limited to." The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one addit...

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PUM

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Abstract

Embodiments of the present disclosure provide a RAID reconstruction method and device. In some embodiments, a computer-implemented method is provided. The method includes: determining a spare RAID group with a spare capacity from among a plurality of disks contained in at least one redundant array of independent disks (RAID) group of a storage pool; establishing a spare logical unit from the spare RAID set; and responding to the One of the at least one RAID group in the storage pool is in a degraded state, and the faulty disk in the degraded RAID group is reconstructed by using the spare logical unit.

Description

Technical field [0001] Embodiments of the present disclosure generally relate to data storage, more particularly, to reconstruction methods of independent disc redundant array (RAID). Background technique [0002] A separate disk redundant array (RAID) is a data storage virtualization technology that combines multiple physical discs into a single logic unit for data redundant backup and / or performance improvements. Taking RAID5 as an example, it can be composed of a block level strip having a distributed check information. When a single disk fails, subsequent reads can be calculated by distributed check information, making no data is lost. At the same time, the preparatory disc will be selected to replace the faulty, and all the data on the faulty will be rebuilt and written to the pre-plate. In traditional RAID, the RAID group (RG) will consume all disk space within the group, which will adversely affect the effects and cost of fault reconstruction. Inventive content [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/0634G06F3/0689G06F11/1662G06F11/2094G06F11/1084G06F11/1088G06F11/1092
Inventor 高健韩耕董继炳杨利锋徐鑫磊
Owner EMC IP HLDG CO LLC