emath2544 emath2544

20-12-2022
Computers and Technology

Answered

1: the mean time to failure (mttf) of a single disk is 400,000 hours. if a raid 0 array is using 5 such disks, what is the mttf (with failure defined as the loss of any data) of the entire array?

Answer :

ShubhamSrivastava ShubhamSrivastava

25-12-2022

A single disk's mean time to failure (mttf) is 400,000 hours. The MTTF of the entire array is 80000 hours if a raid 0 array uses 5 such disks.

What is MTTF ?

A maintenance metric called mean time to failure (MTTF) counts how long an unrepairable item typically lasts before failing. MTTF can alternatively be regarded as an asset's average lifespan because it only applies to equipment and assets that cannot or should not be fixed. There are a number of circumstances in which an asset might not be fixed, but the most frequent one is because replacing the asset is less expensive and time-consuming. For instance, it is probably more cost-effective to replace a tire that costs a few hundred dollars in labor and parts than to remove the wheel and attempt to repair it. Simply said, it's not worth the time or money.

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