sudo smartctl -a -d sat+megaraid,N /dev/sdX
By using the -d megaraid,N flag, you can bypass the abstraction layer and perform crucial health monitoring on your Dell PERC-managed drives. sudo smartctl -a -d sat+megaraid,N /dev/sdX By using
If you are trying to run smartctl on a Dell server with a MegaRAID controller, you must tell the command which controller and which physical drive to query. N is the (or “drive ID”) as reported
Many newcomers try -d megaraid,1 expecting the first drive, but it is 0 . please try adding '-d megaraid
N is the (or “drive ID”) as reported by the RAID controller , not the OS device name. It typically ranges from 0 to the number of physical drives minus one.
smartctl -a -d megaraid,2 /dev/sda
You will likely encounter the following exact error string in your terminal or system logs: Smartctl open device: /dev/sda failed: DELL or MegaRAID controller, please try adding '-d megaraid,N'
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