| 摘要 |
A computer system of the present invention selects and executes an appropriate action in a case where capacity of a pool that provides a real storage area to a virtual logical volume is insufficient. A management computer determines, based on a utilization status of each pool, whether or not there exists a prescribed pool that requires pool size expansion. The management computer, in a case where the prescribed pool is detected, selects at least any one of a volume addition method for adding an unused real volume to the prescribed pool and a data migration method for migrating data of the virtual logical volume to another pool other than the prescribed pool, and expands a pool size of the prescribed pool in accordance with the selected method.
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