To bypass this and query the physical disks directly, you must use the -d megaraid,N option. This flag uses the MegaRAID , a specific interface in the Linux kernel that allows tools like smartctl to send commands directly to the physical drives behind the RAID controller.
Demystifying the MegaRAID Error: How to Fix "smartctl open device /dev/sda failed" on Dell PERC Servers To bypass this and query the physical disks
✅ Works perfectly once you add -d megaraid,N . Common mistake: Forgetting to specify the physical disk index. Best practice: Use --scan to discover disks + indexes automatically. Common mistake: Forgetting to specify the physical disk
If you have any other questions, please share the output of smartctl --scan or the storcli commands you run. That information will make it much easier to offer specific guidance for your configuration. That information will make it much easier to