Electrical computers and digital processing systems: memory – Storage accessing and control – Access timing
Reexamination Certificate
2004-12-20
2008-07-08
Bataille, Pierre-Michel (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Access timing
C711S162000, C711S112000, C711S156000, C714S006130
Reexamination Certificate
active
07398367
ABSTRACT:
A disk array connected to a storage area network via a fibre channel has one or more ports each controlled by a processor. Even the disk array with one port and one processor executes online processing and backup processing at the same time while considering an online processing load. A port controller not only accepts a request from a host computer but issues a request to other storage controllers to allow online processing and backup processing to be executed at the same time. In addition, the disk array, if provided with a plurality of ports, selects ports or schedules processing depending upon the load to prevent backup processing from affecting online processing performance.
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Matsumoto Yoshiko
Takamoto Ken-ichi
Bataille Pierre-Michel
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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