Changing-over and connecting a first path, wherein hostscontinue accessing an old disk using a second path, and the second path of the old disk to a newly connected disk via a switch
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United States of America Patent
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Oct 31, 2006
Issued Date -
N/A
app pub date -
Sep 15, 2003
filing date -
Jun 24, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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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