Interesting for me, I’ve had two drive failures, both in the past year, but otherwise nothing for the past five+ years. Both were data center class drives (Seagate Exios) and died within the first 2 months of purchasing them. I have over 20 consumer grade drives with >50,000hrs of reported power on time, of which 3-4 are >70,000hrs. They constantly see writes, but I’m definitely not pushing max IOPs by no means on a regular basis. I’d say around 1-2% of the time they are under very heavy read/write activity, otherwise just constant appending of data at around 50Mb/sec across the entire RAID pool.
This is a pretty common pattern with disk failures - in my experience they either tend to fail in the first few months, or they make it for the duration.
Re:An Introduction to ZFS
by magicalhippo on Friday November 20, 2020 @08:50AM
(#25160415)
It's even got a name: the bathtub curve[1].
[1]: http://www.applied-statistics.org/Glossary/BathTubCurve.html
Now I have a backup of everything and whenever I have to think about how much storage I need for something I always take that number and multiply it by three -- if it's only stored once or twice, it really can't be more important than /tmp.