Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2008-06-09
2011-12-27
Tsai, Henry (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S036000, C710S041000
Reexamination Certificate
active
08086768
ABSTRACT:
The storage system includes a first storage subsystem having a first logical volume to be accessed by a host computer, and a second storage subsystem connected to the first storage subsystem and having a second logical volume to be mapped to the first logical volume. The first storage subsystem includes a memory having definition information for defining a plurality of logical paths that transfer, to the second logical volume, I/O from the host computer to the first logical volume, and a transfer mode of the I/O to the plurality of logical paths. At least two or more logical paths among the plurality of logical paths are defined as active, and the controller transfers the I/O to the at least two or more logical paths set as active.
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European Search Report for EP 08171195.4-1245/2107449 mailed Aug. 3, 2010.
Tamura Keishi
Watanabe Yutaka
Hitachi , Ltd.
Hitachi America, Ltd.
Rhu Kris
Tsai Henry
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