February 1, 20206 yr I recently had some issues with with my cache pool. My SSDs were both beyond their LBAs written warranty - however I wasn't seeing anything in the SMART reports that indicate a bad disk aside from a handful of CRC errors, which I thought are usually attributed to bad cables. Sometimes one of the disks would just drop out with an unmountable filesystem. And sometimes it seems to have even impacted other disks connected to the motherborad (not sure if related). I ended up replacing these drives and now all of my issues seem to be resolved... I am closely monitoring my logs, so hopefully this was actually the root cause of my issues. If not, when then at least I ruled out one possibility. So I guess my question is, what are things to lookout for to know when an SSD is dying? I know they don't really die the same way as mechanical drives. Also, can a dying SSD impact other disks, particularly if mover is running?
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