[AusNOG] Possibly useful device for data retention?

Scott Howard scott at doc.net.au
Tue Jun 30 00:45:53 EST 2015


On Mon, Jun 29, 2015 at 4:27 AM, Ross Wheeler <ausnog at rossw.net> wrote:
>
> I notice in their docs, they also claim 800,000 hrs MTBF, which "should"
> be 91 years. I wonder if I can put in a warranty claim, it's throwing
> errors after just under 18 years 3 months in service!


No, it "shouldn't".

Most manufacturers calculate MTBF (or more correctly, Annual Failure Rate,
which is the real measurement they actually use) over the first 5 years of
the drive.  Once you get beyond 5 years, all bets are off.

Your disk is 8 years old, so the published MTBF numbers are meaningless as
far as it's expected failure rate at that point in it's life.

  Scott
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