| 摘要 |
A storage apparatus 10 implements Thin Provisioning functions by allocating a storage area of a physical drive 171 to a logical page in units of a physical page, the physical drive 171 being managed as a storage pool 93, the logical page being a management unit of a storage area of a virtual volume 52; performs tier arrangement processing to replicate data stored in a migration source physical page to a migration destination physical page; and performs replacement processing for the physical drive 171 upon receipt of a request to replace the physical drive 171 in units of a physical device (PDEV). In performing the replacement processing for the physical drive 171, when a first processing mode is designated as tier arrangement processing mode, the storage apparatus 10 cancels start of the tier arrangement processing, and then starts the replacement processing.
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