Information storage apparatus including an uniterruptible power supply (UPS) and an interlock control method of the same, comprising

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6389546
SERIAL NO

09287376

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Abstract

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO12983

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kano, Azuma Odawara, JP 39 421
Sato, Masahiko Odawara, JP 236 3546

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