Question: 2. (15 points) Suppose a given server computer has 4 disk drives arranged as a redundant file system. That is, for the file system to

2. (15 points) Suppose a given server computer has 4 disk drives arranged as a redundant file system. That is, for the file system to fail, two disk drives out of the four must fail. At the same time. The drives are not hot swappable it takes significant time to replace a failed drive. Suppose that that the MTTF for each of the individual disk drives is 1 year. What is the MTTF of the disk drive subsystem?

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