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by notacoward
1835 days ago
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Only if your response is to continue. If your response is to mark the processor pair as faulty and take it out of service, two is sufficient. I worked on the kernel for a fault-tolerant system in 1991 based on this model plus checkpointed memory. The sales story was that such a design was more cost-effective than the "pair and spare" approach used by competitors like Tandem and Stratus. |
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