Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality |top| May 2026

When running smartctl on a Dell PowerEdge server or any system using a MegaRAID (LSI/Broadcom) controller, you often encounter this error: Smartctl open device: /dev/sda failed: Dell or MegaRAID controller, please try adding '-d megaraid,N' .

Once you have the ID, run the command against the controller's device node (usually /dev/sda or /dev/bus/0 ). Cannot get smartctl working - Unix & Linux Stack Exchange When running smartctl on a Dell PowerEdge server

You cannot guess this number, as it doesn't always start at 0. Use the storcli (or older MegaCli ) utility to find the (Device ID). Command : sudo storcli /c0 /eall /sall show please try adding '-d megaraid