[AusNOG] Possibly useful device for data retention?

[Jarryd Sullivan]

Scott is correct here, Seagate have a small article describing MTBF/AFR which explains a little bit about the process for those interested: http://knowledge.seagate.com/articles/en_US/FAQ/174791en?language=en_US

They definitely state that it's not a warranty of any sort nor is it a statement that your drive will make it to anywhere near the publicised MTBF numbers.

Jarryd Sullivan


From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Scott Howard
Sent: Tuesday, 30 June 2015 12:16 AM
To: Ross Wheeler
Cc: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] Possibly useful device for data retention?

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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