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

If you try -d megaraid,999 on a system with only 4 drives, smartctl will fail similarly. Always verify the correct IDs with storcli or by trial with small range.

smartctl open device /dev/sda failed: Dell or MegaRAID controller. Please try adding '-d megaraid,N' If you try -d megaraid,999 on a system

) as a single logical device, effectively hiding the physical health data of the individual drives behind it If you try -d megaraid