| 摘要 |
A pool, which has multiple pool regions which are storage regions capable of being dynamically allocated or released, is configured from a plurality of pool groups and a pool free region group which is common to the plurality of pool groups. Each of the pool groups is related to each storage control function of a storage system. When a used value of a certain pool group exceeds the threshold, a storage controller of the storage system selects a pool free region appropriate for the pool group from the pool free region group, and allocates the selected pool free region to the pool group.
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