| 摘要 |
A rule evaluation unit classifies users into users of fixed PC allocation and users of dynamic allocation according to the user utilization characteristic and stores the classification result in a user classification table. When a user makes a PC utilization request, a PC allocation unit allocates a predetermined PC to a user of fixed PC allocation and allocates an empty PC in the PC pool to a user of dynamic allocation. Moreover, a volume rearrangement unit executes volume migration so as to equalize the I/O performance of the physical disks in the storage device according to the user utilization characteristic.
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