When do you personally decide that it’s time to replace a “bad” drive?
Previously i have replaced my drives as soon as i get any amount of data having to be fixed by zfs.
But it hit me today that maybe I’m being dumb and wasting my money?
Since i run 2 disk mirrors I can technically afford one drive to fail completely and even if anything would happen when i only have that one disk left i have a backup system (not that i necessarily want to spend the time restoring from that backup just because of being lazy).
So when do you guys replace your drives?
What are you monitoring, what are the signs that you are looking for?
Zfs errors? Smart? Complete drive failure?