| 摘要 |
A storage device including a migration source logical volume of an application copies data stored in the logical volume into a migration destination logical volume of the application. After the copy process is started, the storage device stores data written into the migration source logical volume as differential data without storing the data into the migration source logical volume. When the copy process is completed for the data stored in the migration source logical volume, a management computer starts copying of the differential data, and in a time interval after the copying of the data stored in the migration source logical volume is completed but before the copying of the differential data is completed, a computer being a migration destination of the application is turned ON, thereby reducing power consumption at the time of application migration.
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