Data migration method based on Blu-ray disc jukebox, server and Blu-ray disc jukebox

The invention provides a data migration method based on a Blu-ray disc jukebox, a server and the Blu-ray disc jukebox. The method comprises the following steps: firstly, acquiring file information of data to be migrated and available space of each optical disc of the Blu-ray disc jukebox; determining a target migration position of the to-be-migrated data according to the file information of the to-be-migrated data, the available space of each optical disk and a preset migration strategy; wherein the preset migration strategy is used for reducing the optical disc calling number in the data writing/reading process; the preset migration strategy is determined according to file information of the to-be-migrated data; and finally, writing the to-be-migrated data into each optical disc of the blue-ray disc library according to the target migration position. The appropriate preset migration strategy is adaptively matched according to the file information of the to-be-migrated data, and the optical disc calling numbe