| 摘要 |
The invention provides a computer system, storage system, and device control method which keep and operate long-term data stored in a disk device using its characteristics for a long time and at low cost, in a storage system or in a storage system using an external storage connection method. A computer system comprises a host computer 100 , a storage system 130 , and a management server 110 , which are connected to one another via a network. The storage system 130 receives a request to detach a logical device, specifies a logical device to be processed with information included in the request and a physical device corresponding to the relevant logical device, releases a definition of a host path of the logical device, and stops the physical device 137.
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