Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality 〈2027〉

smartctl -d megaraid,0 /dev/sda --scan-open

If the controller is set to JBOD (individual disks passthrough without RAID), you might not need -d megaraid,N . But Dell PERC defaults to RAID mode; JBOD is rare.

storcli (Storage Command Line Tool) is the modern utility for Broadcom/LSI/Dell MegaRAID controllers. storcli show Use code with caution. (Take note of your controller ID, usually c0 ) List all physical drives: storcli /c0/eall/sall show Use code with caution. storcli show Use code with caution

smartctl -H /dev/sda smartctl: open device: /dev/sda failed: Permission denied

Modern Dell servers (12th generation and newer) use perccli (PowerEdge RAID Controller CLI) as the successor to MegaCLI and MegaRAID Storage Manager . why it happens

sudo apt install smartmontools

Explicitly append your physical drives using the following format: how to fix it

The article explains the error, why it happens, how to fix it, and includes best practices for monitoring RAID drives behind Dell PERC / MegaRAID controllers.