Availability is the most important consideration for designing servers, followed closely by scalability and throughput.

a. We have a single processor with failures in time (FIT) of 100. What is the mean time to failure (MTTF) for this system?
b. If it takes 1 day to get the system running again, what is the availability of the system?
c. Imagine that the government, to cut costs, is going to build a supercomputer out of inexpensive computers rather than expensive, reliable computers. What is the MTTF for a system with 1000 processors? Assume that if one fails, they all fail.

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