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

a. We have a single processor with a failure in time (FIT) of 100. What is the mean time to failure (MTTF) for this system?

b. If it takes one 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.