A data migration method, device, equipment and readable storage medium

Abstract

The invention discloses a data migration method. The method comprises the following steps: obtaining an IOPS of a target physical disk; judging whether the IOPS of the target physical disk exceeds a preset first threshold or not; if yes, judging whether the IOPS of the target physical disk exceeds a preset second threshold value or not again; and if not, indicating that the data in the current physical disk does not meet the condition of changing the data type, and in order to enable the data to be stored in each physical disk in a balanced manner, migrating the data to be migrated in the target physical disk to the target physical disk, wherein the IOPS of the target physical disk is lower than a preset third threshold value, which indicates that the target physical disk is an idle disk in the current storage system, and then the data to be migrated is migrated to the target physical disk, so that the data storage balance in the current storage system can be realized, and the serviceperformance of the storage system is improved. Correspondingly, the data migration device and equipment and the readable storage medium disclosed by the invention also have the above technical effects.

Description

technical field [0001] The present invention relates to the technical field of data storage, and more specifically, to a data migration method, device, equipment and a readable storage medium. Background technique [0002] In the existing technology, the data in the storage system is generally divided into hot data, warm data and cold data according to the access frequency of the data, and the disk with high read and write efficiency is used to store hot data, and the disk with medium read and write efficiency is used to store hot data. Warm data is used to store cold data on disks with low read and write efficiency. This can not only improve the access efficiency of hot data, but also balance storage costs. Wherein, when the access frequency of cold data suddenly increases, the cold data can be changed into warm data or hot data according to corresponding migration conditions, and then the cold data can be migrated to corresponding storage disks. [0003] Among them, the ...

AI Technical Summary

Problems solved by technology

[0003] Among them, the existing migration methods only focus on different types of data, and cannot balance the pressure on the disks storing the same type of data

For example, if there are multiple disks used to store cold data, and the data with high access frequency is located on the same disk, then this disk will have greater pressure than other disks storing cold data, while other disks storing cold data The data disk is relatively idle, which causes a waste of resources; at the same time, the access frequency of the disk does not meet the corresponding migration conditions, so the data on the disk cannot be changed to warm data or hot data, so Failure to reduce the pressure on the disk will lead to unbalanced data storage in the storage system, which will affect the service performance of the storage system

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