The Charles Stark Draper Laboratory, Inc.

M Jay Prizant

Samuel Beilin

Neil Brock

David Crane

Jeffrey Zinchuk

Roger Racine

Eric T Antelman

Adam J Elbirt

Systems and methods are disclosed herein for a replicated duplex computer system. The system includes a triplet of network elements, which each maintain a clock signal, and a monitor at each network element for monitoring incoming clock signals. Each network element interfaces with a fault containment region (FCR). The system provides the ability to transition to a duplex system if one of the fault containment regions fails. The three network elements are able to send their clock signals to the other network elements and receive their own clock signal and clock signals from the other elements. The monitors are configured to detect discrepancies in the clock signals of the network elements. If a monitor determines that an FCR has failed, each network element is reconfigured so that the FTPP system operates in a duplex mode without the faulty FCR by replacing the clock signal from the faulty element with its own clock signal.

System and method for duplexed replicated computing

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Needham, MA, United States of America

M Jay Prizant