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Storage system capacity expansion method and device, equipment and machine readable storage medium

A storage device and storage system technology, applied in the field of communications, can solve problems such as the inability to efficiently complete data balance, and achieve the effects of improving efficiency, high data transmission efficiency, and eliminating data transmission.

Pending Publication Date: 2021-03-09
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the present disclosure provides a storage system expansion method, device, electronic equipment, and machine-readable storage medium to improve the above-mentioned problem that data balance cannot be efficiently completed

Method used

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  • Storage system capacity expansion method and device, equipment and machine readable storage medium
  • Storage system capacity expansion method and device, equipment and machine readable storage medium
  • Storage system capacity expansion method and device, equipment and machine readable storage medium

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Embodiment Construction

[0030] The terminology used in the embodiments of the present disclosure is only for the purpose of describing a specific embodiment, rather than limiting the present disclosure. As used in this disclosure and the claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although terms such as first, second, and third may be used in the embodiments of the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly,...

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Abstract

The invention provides a storage system capacity expansion method and device, equipment and a machine readable storage medium, and the method comprises the steps: calculating and generating migrationinformation according to a preset rule, wherein the migration information comprises codes of data units, needing to be migrated to all empty hard disks, in all data hard disks, and a mapping relationship between each data unit to be migrated and the corresponding immigrated empty hard disk; migrating each data unit needing to be migrated in each data hard disk into the corresponding empty hard disk according to the migration information; updating the mapping relationship between the data units in a mapping table and the hard disk according to a migration result; exchanging and installing a part of originally loaded empty hard disks of newly added storage equipment and a part of originally loaded data hard disks on the original storage equipment, so that the storage equipment comprises a plurality of empty hard disks and a plurality of data hard disks. Through the technical scheme of the invention, the efficiency of completing data equalization after capacity expansion of a storage polegroup is greatly improved.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular, to a storage system expansion method, device, equipment, and machine-readable storage medium. Background technique [0002] Copy: (Replication): A technology used to ensure data persistence, which refers to retaining multiple identical copies of data in the system. Common such as 2 copies, 3 copies, etc. [0003] Erasure Code: A technology used to ensure data persistence. It divides the data into fragments (N slices), and generates redundant fragments (M slices) according to a certain algorithm, and can reconstruct the lost data according to the remaining data in the case of partial data loss (no more than M slices). This segmentation method is generally denoted as (N, M). Common configurations are (4,2), (6,2), (12,3), etc. [0004] Data Rebalance: refers to the data redistribution process caused by the increase or decrease of storage nodes or hard disks in...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0607G06F3/0647G06F3/0683G06F3/067
Inventor 张天洁
Owner NEW H3C TECH CO LTD
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