Agree, you should consider replacing your drives on your primary server (backup servers we can debate) as soon as you start seeing the first SMART problems, lik

Agree, you should consider replacing your drives on your primary server (backup servers we can debate) as soon as you start seeing the first SMART problems, like bad sectors. If you do regular data scrubbing, and none of these problems show up on the other drives, I'd argue the risk that they fail simultaneously is fairly low.