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4. A single disk has a MTTF of 1,000,000 hours. Suppose a storage system has 10 disks. Using the simplifying assumptions that the lifetimes are

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4. A single disk has a MTTF of 1,000,000 hours. Suppose a storage system has 10 disks. Using the simplifying assumptions that the lifetimes are exponentially distributed and that failures are independent, compute the MTTF of the system as a whole. What is the failure rate of the system as a whole? 4. A single disk has a MTTF of 1,000,000 hours. Suppose a storage system has 10 disks. Using the simplifying assumptions that the lifetimes are exponentially distributed and that failures are independent, compute the MTTF of the system as a whole. What is the failure rate of the system as a whole

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