Question

"the mean time to failure of a single disk is 200000 hrs. if an array of disks is using 5 such disks, the mttf of the array is

Answer 1

the five such disks=200000×5=1000000

Answer 2

Answer:

40000 hours.

Explanation:

Suppose,

that the mean time to failure of a disk is 200,000 hours. Then the mean time to failure of some disk in an array of 5 disks will be 200,000/5 = 4000 hours.

Now here it multiplies for the 2 disks but before the MTTF was divided.

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