Magnetic-optical-electric hybrid storage system and data acquisition and storage method thereof

The invention discloses a magnetic-optical-electric hybrid storage system which comprises an internal memory, a solid-state disk storage area, a magnetic disk storage area and an optical disc storage area. The three storage areas logically form unified storage space and maintain a global file address mapping table to allow a user or external program to perform data addressing and access in a unified and consistent manner. During data storage, a system storage management area automatically selects appropriate physical storage positions and data arrangement manners from the three storage areas according to data access behaviors. When access modes change, the storage management are dynamically selects the appropriate physical storage position and data arrangement manner to perform necessary data migration, and the whole process is transparent to external users. The magnetic-optical-electric hybrid storage system has the advantages that the problems of an existing storage system are solved, the storage features of three storage equipment are reasonably utilized, and data storage efficiency and resource utilization rate are increased.