A library apparatus includes a medium name storage unit that stores medium name conversion information in which a virtual medium name specifying a storage medium in a read/write request from a host is related to a real medium name specifying the storage medium in the library apparatus, a conveying mechanism unit that conveys the storage medium, a drive that reads/writes data from/to the storage medium conveyed by the conveying mechanism unit in response to the received read/write request, a conversion unit that converts the virtual medium name included in the received read/write request to the real medium name on the basis of the medium name conversion information stored in the medium name storage unit, and a conveying mechanism control unit that controls the conveying mechanism unit to convey the storage medium having the real medium name converted by the conversion unit to the drive.