DATA MIGRATION METHOD, DATA MIGRATION APPARATUS AND STORAGE DEVICE

摘要

Provided are a data migration method and apparatus and a storage device. The method comprises: determining a source SSD in a hard disk group, wherein the space utilization rate of the source SSD is higher than the average space utilization rate of the hard disk group; determining at least one destination SSD in the hard disk group; calculating a data volume migrated out by the source SSD according to the space utilization rate of the source SSD and the average space utilization rate; and according to the data volume migrated out by the source SSD, migrating data of the source SSD into the destination SSD. The service life of an SSD storage array may be prolonged.