| 摘要 |
A storage system having a plurality of rewritable removable media and a method for controlling that system are disclosed. The storage system has a controller that updates medium update count management information every time contents of any medium are updated. When the update count for a medium is judged to have exceeded a predetermined threshold value, the controller starts a spare medium copy process whereby the contents of the medium with its update count found higher than was predetermined are copied to a spare medium. After the copying, the spare medium is transported to a cabinet for storage therein in place of the original medium whose contents have been copied, and the original medium is ejected from an outlet port. When a spare medium loading process is started from a service terminal, a spare medium put through an inlet port is loaded into the cabinet to replenish the spare medium inventory. In this manner, the storage system utilizing removable media each subject to a maximum allowable update count has these media replaced without manual intervention and without stoppage of system operation.
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