| 摘要 |
The present invention concerns a storage method and system ( 1 ) comprising processing means ( 11 ) and storage resources ( 20, 100 ) containing firstly storage means ( 20 ) including at least one physical library (P 20 <SUB>1 </SUB>to P 20 <SUB>n</SUB>) and secondly memory means ( 100 ) called a cache ( 100 ), in which the processing means ( 11 ) of the storage system ( 1 ), vis-à-vis the computer platforms ( 10 <SUB>1 </SUB>to 10 <SUB>n</SUB>), emulate at least one virtual library (V 20 <SUB>1 </SUB>to V 20 <SUB>n</SUB>) from at least one physical library (P 20 <SUB>1 </SUB>to P 20 <SUB>n</SUB>) which the storage system has under its control, characterized in that the processing means ( 11 ) of the storage system ( 1 ) comprise a management module ( 30 ) responsible for emulation and managing priorities over time for accesses to the storage resources ( 20, 100 ) using the results of calculations of at least one cache activity index per determined periods of time, and of at least one cache occupancy rate at a given time.
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