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

To resolve this issue, you need to inform smartctl about the presence of the MegaRAID controller and the logical drive number (N) associated with the disk drive you want to monitor. You can do this by adding the -d megaraid,N option to the smartctl command.

: The /dev/sdX device passed to smartctl does not need to be the exact physical disk you are targeting—it is merely a handle to access the RAID controller. The -d megaraid,N parameter tells the controller which physical disk to query. To resolve this issue, you need to inform

The output will display the exact syntax needed to communicate with each device: The -d megaraid,N parameter tells the controller which

Many modern servers use hardware RAID controllers (e.g., Dell PERC / LSI MegaRAID) that present physical drives behind the controller, preventing smartctl from accessing raw device paths like /dev/sda. This feature outlines a robust implementation to detect such controllers, attempt appropriate access methods, and provide actionable fallback steps — including adding support for MegaRAID controllers (e.g., using the megaraid plugin/option) — to surface SMART data where possible. smartctl -a -d megaraid,1 /dev/bus/0

smartctl -a -d megaraid,1 /dev/bus/0