Hmmm, never had a problem with my WD greens under linux software raid (mdadm). TLER is good for RAID drives, because it allows it to recover from bad reads quicker ... but if any of my drives did develop read errors, I'd replace it right away rather, rather then attempt to keep using it. Wouldn't matter what type of drive it is or if TLER was in use or not ... once it starts spitting out any read errors, it should be replaced. TLER doesn't make a difference if you are not experiencing read errors on your drives. If you are experiencing read errors, the drive should be replaced. In a home environment, TLER doesn't make a huge difference. Losing your RAID array over not wanting to replace a $90 hard drive is madness.