Electrical computers and digital processing systems: support – Computer power control – Having power source monitoring
Reexamination Certificate
2006-02-28
2006-02-28
Auve, Glenn A. (Department: 2111)
Electrical computers and digital processing systems: support
Computer power control
Having power source monitoring
C714S022000
Reexamination Certificate
active
07007185
ABSTRACT:
In an information storage apparatus including an uninterruptible power supply (UPS), a sequence of operation from when a power failure occurs to when power of the UPS is turned off is automatically accomplished completely without human power to thereby guarantee user data. For this purpose, the apparatus includes a disk array, a host, and a plurality of UPSs to supply power to the disk array and the host. The UPSs monitor a state change of power on a host side by a host ac control line or an SCSI unit to sequentially execute processing in an order of processing of host termination, processing for cache flush of the disk array processing of host UPS termination processing of disk array termination and processing for termination of disk array UPS. Between the UPSs and the Host and between the UPSs and the disk array, there is provided an interlocking control signal to monitor current states thereof so as to control the respective operations. Resultantly the host UPS and the disk array UPS have the same configuration for wider usability.
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Kano Azuma
Sato Masahiko
Auve Glenn A.
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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