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

megacli -PDList -a0 | grep "Slot Number" # (if MegaCLI installed)

| Component | Meaning | | :--- | :--- | | | Device Type Flag | | megaraid | The driver for Dell PERC / LSI controllers | | ,N | The physical disk index (0, 1, 2, etc.) | megacli -PDList -a0 | grep "Slot Number" #

The error smartctl open device: /dev/sda failed: DELL or MegaRAID controller, please try adding -d megaraid,N is not a bug—it is a sign that you need to tell smartctl which physical drive behind the RAID controller to query. please try adding -d megaraid

smartctl -a -d megaraid,0 /dev/sda