Computer storage system providing virtualized storage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 10, 2006
Grant Date -
Nov 13, 2003
app pub date -
Nov 16, 2001
filing date -
May 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In the computer system where the plurality of host computers and the plurality of storage apparatuses are interconnected, in order to carry out the data migration between the storage apparatuses transparently to the host computers, the back end server provides the virtual disk to the host computers. From the host computers, at first, the virtual disk looks the same as the old storage subsystem. When migrating the data from the old storage subsystem to the new storage subsystem, at first, the back end server instructs the data migration unit to execute the data migration processing. Subsequently, the back end server switches the setting of the virtual disk, thereby causing the virtual disk to correspond to the new storage subsystem.
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