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

The standard smartctl command expects direct ATA/SCSI passthrough. A RAID controller intercepts these commands. Without special instructions, the controller cannot know which physical disk behind the virtual drive you want to query.

: Run sudo storcli /c0 /eall /sall show and look for the DID (Device ID) column.