CARTRIDGE CONTROL SYSTEM IN STORAGE MEDIUM LIBRARY ARRAY DEVICE

PROBLEM TO BE SOLVED: To reduce the control work of plural cartridges for storing plural storage media belonging to the same RAID group. SOLUTION: This system is provided with a cartridge housing library for storing and preserving plural cartridges and a cartridge carrying body for carrying the cartridge based on prescribed information between the cartridge housing library and the plural system library units of a storage medium library array device. The cartridge carrying body fetches the cartridge based on the prescribed information from the cartridge housing library, and successively carries the cartridge to the plural system library units. Each library unit which receives the cartridge carries the storage medium from the cartridge to a housing body or drive, or from the housing body or drive to the cartridge so that the storage medium can be housed. Thus, it is possible to easily control the plural cartridges for housing the plural storage media belonging to the same RAID group.