| 摘要 |
Data migration can be executed between new and old disk apparatuses without changing the disk definition of a host computer. A switch having the function of online data migration is provided between the host computer and the old disk apparatus, data are copied to the new disk apparatus while the disk apparatus is accessed continuously by the host computer. If a SCSI command for identifying disk apparatuses is issued by the host computer after data migration, the response of the old disk apparatus is sent back.
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