Question: consider a disk sub-system with the following mean time to failure(MTTF) a. 20 disks, each rated at 500,000 MTTF b. one SCSI controller, 500,000 MTTF

consider a disk sub-system with the following mean time to failure(MTTF)

a. 20 disks, each rated at 500,000 MTTF

b. one SCSI controller, 500,000 MTTF

c. 1 power supply, 400,000 MTTF

d. 1 fan, 400,000 MTTF

e. 1 SCSI cable, 1000,000 MTTF

assuming that lifetimes are exponentially distributed, and that component failures are independent of one another, compute the MTTF for this system as a whole.

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