| 摘要 |
A library control system includes a library device for storing plural recording media, plural host devices for requesting for an access to the recording media, and a channel switch device for controlling connection between the host device and the library device. The library device has plural drive units and a carriage unit for carrying a recording medium. The channel switch device has a logic switch for connecting plural host devices and plural drive units in accordance with a predetermined zone map, and a zone manager for setting the zone map. Each of the host devices has a zone controller for requesting the zone manager to set a zone map each time an access request is sent from the controller. The zone manager sets a zone map so that one of the plural drive units and one of the plural host devices belong to one zone and another host device does not belong to the zone to which the one drive unit and the one host device already belong.
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