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    (2013)" Software Composability and Mixed Criticality for Triple Modular Redundant Architectures

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    Abstract. Composability and mixed criticality are concepts that promise an ease of development and certification for safety critical systems in all industrial domains. In this paper we define the necessary requirements, highlight issues and classify fault containment, when extending already existing triple modular redundant architectures with these concepts. We evaluate the needed adaptations and extensions of triplication mechanisms with respect to the required safety properties. Finally, we suggest novel architectures for serving triplicated modular redundant applications and compare them to the previously presented solutions.
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