Electrical computers and digital processing systems: memory – Address formation – Using table
Reexamination Certificate
2006-11-09
2009-11-17
Chace, Christian P (Department: 2187)
Electrical computers and digital processing systems: memory
Address formation
Using table
C711S161000, C709S245000
Reexamination Certificate
active
07620794
ABSTRACT:
An object of the present invention is to integrally manage disk storage apparatuses through virtualization. Some physical storage apparatuses14connected to a host computer10via a communication network12are virtualized with a virtual switch18, a control unit20, and a virtual device22. The physical storage apparatus specifies a command when receiving the command from the host computer10, and accesses, if the command access has been made to its own physical storage apparatus, a real disk via the virtual control unit20and virtual device22, and executes I/O processing. If the command access is not made to its own physical storage apparatus, the physical storage apparatus14directs the command to the transmission target via the virtual switch18. The physical storage apparatuses14are integrally managed according to the command in the above described manner.
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Chinese Office Action mailed Apr. 2, 2009 in English.
Maeda Masami
Sakaki Hidetoshi
Takeuchi Hisaharu
Tsukada Masaru
A. Marquez, Esq. Juan Carlos
Chace Christian P
Hitachi , Ltd.
Rutz Jared I
Stites & Harbison PLLC
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