Achieving Target MTTF by Duplicating Reliability-Critical Components in High Performance Computing Systems
Mean Time To failure, MTTF, is a commonly accepted metric for reliability. In this paper, the authors present a novel approach to achieve the desired MTTF with minimum redundancy. They analyze the failure behavior of large scale systems using failure logs collected by Los Alamos National Laboratory. They analyze the root cause of failures and present a choice of specific hardware and software components to be made fault-tolerant, through duplication, to achieve target MTTF at minimum expense. Not all components show similar failure behavior in the systems. Their objective, therefore, was to arrive at an ordering of components to be incrementally selected for protection to achieve a target MTTF.