A library apparatus includes a storage shelf that has a plurality of cells
for housing a cartridge that stores a plurality of recording media; a
recording and reproducing unit that performs recording/reproducing of
information to/from the recording media; and a conveying mechanism that
conveys the cartridge to a predetermined position in the storage shelf,
between the storage shelf and the recording and reproducing unit. The
conveying mechanism includes a first conveying mechanism that conveys the
cartridge during a normal operation of the library apparatus; and a
second conveying mechanism that conveys the cartridge during an
abnormal-operation of the first conveying mechanism.