| 摘要 |
A library system is provided for systematically storing information recording media such as magnetic tape cartridges. The library system includes a loading-unloading unit for loading the recording media into the library system and for unloading the recording media out of the library system, a stocker for storing the recording media, a recording-playback unit for recording information on each of the recording media and for playing back each of the recording media, a transfer unit for transferring each of the recording media within the library system, and a controller for controlling the loading-unloading unit, the recording-playback unit and the transfer unit. Further, the library system also includes a history collecting unit for extracting history data from the loading-unloading unit, the recording-playback unit and the transfer unit, respectively.
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