| 主权项 |
1. A library device comprising:
at least an ejection slot which is shared by a plurality of external devices; a physical library unit which contains a plurality of physical recording media and is divided into a larger number of areas than the number of said ejection slots; logical library units each of which are logically correlated with each of said areas; a logical library information storage unit which stores connection information indicating a connection relationship between each of said logical library units and each of said external devices; and a control unit which correlates the ejection slot with said logical library units when each of said physical recording media are ejected; wherein said control unit; refers to said logical library information storage unit in response to a reception of an export process command from said external device, identifies one of said logical library units which is correlated with a physical medium storage slot, which is stored a physical recording medium in said physical library unit having been ordered by said export process command to be ejected from said ejection slot, correlates, in the identified logical library unit, said physical recording medium, which has been ordered to be ejected, to said ejection slot, in response to an input operation for designating said identified logical library unit to an operation unit, designating the identified logical library unit correlated with the physical recording medium to be ejected, and moves only the physical recording medium to be ejected to said ejection slot when the physical recording medium is extracted from said storage slot, wherein with respect to the logical ejection of said logical recording medium correlated to said physical recording medium whose ejection has been ordered by said export process command, said control unit acquires physical slot numbers representing movement origin and movement destination physical slots corresponding on a one-to-one basis to movement origin and movement destination logical slot numbers representing respectively original and destination logical slots of the movement,
in case said physical recording medium is present in said physical slot, in said physical library unit, correlated to said physical slot number corresponding to said movement origin logical slot number and no said physical recording medium is present in said physical slot correlated to said physical slot number corresponding to said movement destination logical slot number:if said movement destination logical slot number indicates said logical ejection slot, said control unit executes an ejection slot medium movement process of moving said physical recording medium to said ejection slot; andif said movement destination logical slot number does not indicate said logical ejection slot, said control unit moves said physical recording medium in said physical library unit to said physical slot of the movement destination, in response to designation made at said operation unit of said logical library unit to which said recording medium whose ejection has been ordered by said export process command is correlated, said control unit checks whether or not said logical ejection slot in said designated logical library unit is correlated to said ejection slot; if said logical ejection slot is correlated to said ejection slot, said control unit does not execute the movement of said recording medium; if said logical ejection slot is not correlated to said ejection slot, said control unit undoes the correlating, made by said ejection slot medium movement process, of said physical slot number corresponding to said logical slot number of said logical ejection slot with said ejection slot in said physical library, returns said recording medium whose movement has been designated and which has been moved by said ejection slot medium movement process from said ejection slot which is said physical slot of the movement destination back to said physical slot of the movement origin, and performs an update of exchanging said physical slot number of the movement origin and that of the movement destination in said physical slot number column of said logical library configuration information table; said control unit moves said recording medium, in said physical library unit, correlated with said logical ejection slot in said designated logical library unit to said ejection slot; and said control unit performs an update of returning said changed correspondence relationship between said logical ejection slot and said recording medium, in said logical library configuration information table, back to its original state. |
