“Hard Drive Life Expectancy" by Andy Klein
“For the last several years, we have written about drive failure, or
more specifically, the annualized failure rates for the hard drives and
SSDs we use for our cloud storage platform. In this post, we’ll look at
drive failure from a different angle: life expectancy."
"By looking at life expectancy, we can answer the question, “How long is
the drive I am buying today expected to last?” This line of thinking
matches the way we buy many things. For example, knowing that a washing
machine has an annualized failure rate of 4% is academically
interesting, but what we really want to know is, “How long can I expect
the washing machine to last before I need to replace it?””
It is never long enough.