Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality [ ORIGINAL ]

If you know disk sizes differ, you can try:

smartctl -i -d megaraid,0 /dev/sda
smartctl -i -d megaraid,1 /dev/sda

One will fail (non-existent drive) or return info for the correct disk.

If the controller is set to JBOD (individual disks passthrough without RAID), you might not need -d megaraid,N. But Dell PERC defaults to RAID mode; JBOD is rare. If you know disk sizes differ, you can

Before using smartctl, you need to map logical drives to physical disk IDs.

smartctl is a command-line tool used to control and query S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) data from hard drives and SSDs. It helps predict drive failures by reporting attributes like Reallocated Sectors, Reported Uncorrectable Errors, Temperature, and more. One will fail (non-existent drive) or return info

If this input was intended to be a search query or a ticket description, here is how it should be rewritten for clarity:

"Issue: I am running smartctl on a Dell server with a MegaRAID controller. The command smartctl open device /dev/sda failed. If the controller is set to JBOD (individual

Attempted Fix: I tried adding the -d megaraid,N arguments, but I need to confirm the correct syntax and drive index."

Final Recommendation: Discard the string 39d megaraid n 39 extra quality. It is gibberish caused by transcription errors. Use the corrected command syntax provided above.

The error message explicitly tells you what to do. You must: