"The responses I received from Synology, QNAP, NETGEAR and Buffalo all indicated that their NAS RAID controllers don't depend on or even listen to TLER, CCTL, ERC or any other similar error recovery signal from their drives. Instead, their software RAID controllers have their own criteria for drive timeouts, retries and when a drive is finally marked bad."
To:Johnson407大 Thank you for providing the article above, I've learn a lot. I don't know anything about TLER technology yet but I'll take time to do some reserch. Interesting and thanks again.