Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-11-07
2006-11-07
Baderman, Scott (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
Reexamination Certificate
active
07134054
ABSTRACT:
A fault of an operating system (OS) is observed, and in addition to application program (AP) fault monitoring, check-point information is preserved without adding dedicated hardware. In a computer having a multi-OS environment, an AP fault monitor and a monitored AP operate on a first OS. A fault monitor operates on a second OS. Each of the first OS and the AP fault monitor transmits an alive message to the fault monitor by utilizing an inter-OS communication function of a multi-OS controller. The fault monitor monitors the alive message of each of the first OS and the AP fault monitor. The monitored AP also transmits an alive message to the AP fault monitor for monitoring. The monitored AP preserves check-point information in a region of a memory. In the region of the memory, information is preserved by a fault and restart of the first OS as well.
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Arai Toshiaki
Oshima Satoshi
Sakoyama Noboru
Baderman Scott
Hitachi , Ltd.
Lohn Joshua
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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