Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2005-12-27
2005-12-27
Bataille, Pierre-Michel (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S154000, C711S162000
Reexamination Certificate
active
06981093
ABSTRACT:
In a disk array control apparatus having a plurality of magnetic disk apparatus under its command for controlling data transfers to and from a host computer in a multiprocessor configuration comprising a plurality of microprocessors, a data path is provided between a cache unit and a shared memory unit, provided independent of the cache unit, for storing configurational information and the like required for system operation and control by the microprocessors, so that in the event of trouble with the apparatus or a sudden abnormality in main power supply, configurational information in a volatile shared memory unit is saved into non-volatile magnetic disk apparatuses from the data path via the cache unit by utilizing an uninterrupted power supply apparatus (UPS).
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Igarashi Yasuhiro
Minowa Nobuyuki
Okubo Yoshinori
Bataille Pierre-Michel
Hitachi , Ltd.
Hitachi Software Co., Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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