Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output command process
Reexamination Certificate
2006-06-06
2006-06-06
Huynh, Kim (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output command process
C710S001000, C710S074000, C711S112000, C711S161000, C711S200000, C711S202000, C711S203000
Reexamination Certificate
active
07058731
ABSTRACT:
A virtual volume module in a host system provides virtual volume view to user-level and system-level applications executing on the host system. The virtual volume module maps I/O from the applications which are directed to a virtual volume to a first physical volume in a first storage system. When necessary, the virtual volume module can map application I/O's to a second volume in a second storage system. The second storage system replicates data in the first storage system, so that when re-mapping occurs it is transparent to the applications running on the host system.
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Casiano Angel L.
Hitachi , Ltd.
Huynh Kim
Townsend and Townsend / and Crew LLP
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