Electrical computers and digital processing systems: memory – Address formation – Address mapping
Reexamination Certificate
2008-11-17
2010-11-30
Lane, Jack A (Department: 2185)
Electrical computers and digital processing systems: memory
Address formation
Address mapping
C711S111000, C711S112000, C711S113000, C711S115000
Reexamination Certificate
active
07844795
ABSTRACT:
A storage apparatus includes a storage unit and a controller, wherein control of inputting/outputting data from/to a device provided in said storage unit is executed in accordance with a request received by said storage apparatus. An actual device of the storage apparatus corresponds to a virtual device which is external to said storage apparatus. The controller operates to perform a process for mapping an actual device address corresponding to a virtual device address, in accordance with a specification of the actual device to be mounted or unmounted to correspond to the virtual device, and storing and retaining mapping information obtained from the mapping in a first table. The controller also performs data input/output process for receiving, an access request for data input/output in which said virtual device address is specified, obtaining the actual device address mapped to said specified virtual device address in said first table, and accessing the actual device by said obtained actual device address.
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Partial English language translation of Office Action in JP 2004-295066, dated May 6, 2010 (cited in Jun. 7, 2010 SB08A/B).
Asaka Yoshihiro
Maeda Masami
Sakaki Hidetoshi
Tsukada Masaru
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Lane Jack A
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