Data migration method, apparatus and device and storage medium

Abstract

The invention discloses a data migration method, apparatus and device and a storage medium. The data migration method comprises the steps that the access type of target data is judged; if the access type of target data is read-write operation, whether the heat duration of the predicted target data is smaller than a preset first threshold value or not or not is judged; if yes, the target data is added to a high-speed buffer area; if not, whether the time is greater than a preset second threshold value or not is judged; if yes, the target data is migrated to a high-speed storage area and is added to the high-speed buffer area; if not, the storage position of the target data is randomly selected. In this way, the data access rate is ensured, frequent data erasing in the high-speed storage area is avoided, data storage in different storage areas in a storage system is balanced, meanwhile the service life of the storage system and the high-speed storage area is prolonged, and the storage cost is saved. Correspondingly, the data migration apparatus and device and the storage medium have the same technical advantages as well.

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 storage medium. Background technique [0002] With the rapid development and rise of the concept of mobile Internet and big data, the amount of data that needs to be stored is increasing geometrically. The explosive growth of data volume and the increasingly detailed data types make data classification and hot and cold data division become less and less important. Data cost per unit capacity, an effective way to improve data storage efficiency and density. [0003] At present, according to the data access requirements, the existing technology stores frequently read and write data, that is, high-heat data, in a cache or a high-speed storage area, and stores infrequently read and write data, that is, low-heat data, in a low-speed storage area. In this way, data with different access requirements are stored in dif...

AI Technical Summary

Problems solved by technology

However, this implementation method only considers the needs of user access, and does not take into account the service life of the storage system

Since the heat of data changes randomly, data needs to be repeatedly migrated and stored in each storage area according to the change of its heat. However, the number of erasing and writing in the high-speed storage area in the storage system is limited, and frequent sequential writing will reduce the performance of the high-speed storage area. service life, which in turn affects the service life of the storage system, resulting in increased storage costs and waste

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