What is annualized failure rate (AFR)?

2018-06-25 13:47

Annualized failure rate is the projected failure rate for a year. It is the relation between the amount of failed drives of a particular model and their hours in operation per year.  More precisely: 

AFR = (100 * amount of failed drives) / (total power on hours /24/365)


Tags: Drive Failure, Stroage Device
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