| 摘要 |
A changer device according to the present invention includes: a plurality of storage media; a magazine for holding the plurality of storage media; a plurality of drives for reading and writing data to storage media, each of these drive reading and writing data to a storage medium selected from the plurality of storage media; and a media transporting device transporting the selected storage medium to the drive as well as transporting the moved storage medium to the magazine. When a request to write data is issued, the data and parity data are stored in a striped manner on the plurality of storage media at the plurality of drives. If data cannot be read or written to a storage medium at one of the drives, the media transporting device transports an operational storage medium to this drive. Then, using the storage media at the drives, the data on the failed storage medium is reconstructed. This reconstructed data is stored on the operational storage medium.
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