Comment by billfor

I have a 13 years old NAS with 4x1TB consumer drives with over 10y head flying hours and 600,000 head unloads. Only 1 drive failed at around 7 years. The remaining 3 are still spinning and pass the long self test. I do manually set the hdparm -B and -S to balance head flying vs unloads, and I keep the NAS in my basement so everything is thermally cool. I'm kinda of hoping the other drives will fail so I can get a new NAS but no such luck yet :-(