Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality New! File

Sometimes helpful for direct-attached drives, but less so behind RAID. Try:

to see a list of detected drives and their corresponding IDs. Use MegaCLI / StorCLI (Dell Recommended): Sometimes helpful for direct-attached drives, but less so

smartctl -d megaraid,2 --all /dev/sda