Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2005-03-03
2009-11-17
Beausoliel, Robert (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
Reexamination Certificate
active
07620845
ABSTRACT:
A distributed system using a quorum redundancy method in which a redundancy process is executed by at least Q processing elements of N processing elements communicable with each other, each of N processing elements includes a resynchronization determining unit for determining that an execution state of the processing element itself can be resynchronized with a latest execution state in the distributed system in the case where the processing element can communicate with at least F+1 elements (F=N−Q) already synchronized of the N processing elements at the time of rebooting the processing element, and a resynchronizing unit for resynchronizing the execution state of the processing element itself to the latest one of the execution states of the at least F+1 processing elements in accordance with the result of determination by the resynchronizing unit.
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European Search Report issued on Sep. 6, 2006, for European Application No. 5005136.6.
Beausoliel Robert
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Kabushiki Kaisha Toshiba
Riad Amine
Toshiba Solutions Corporation
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