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

Dell’s PERC cards (especially Series 7, 8, 9, 10, and 11) are rebranded LSI MegaRAID controllers. Therefore, the generic -d megaraid,N flag is the correct interface.

For production servers, manually checking smartctl on each physical disk is tedious. Consider: Dell’s PERC cards (especially Series 7, 8, 9,

You cannot simply use /dev/sda . You must find the index number (N) of the physical drive behind the controller. Consider: You cannot simply use /dev/sda

smartctl -a -d megaraid,0 /dev/sdb

That lists all physical disks in controller 0. Look for DID (Device ID) or ID – that is your N . Look for DID (Device ID) or ID – that is your N

Look for the DID (Device ID) or PD ID column – those numbers are your N values.

The error is – it's a deliberate safety mechanism. The RAID controller hides physical disks by design. Using -d megaraid,N is the correct, supported, and safe method to query SMART data on Dell PERC and LSI MegaRAID controllers. Ignoring this flag risks querying the wrong device or corrupting the RAID metadata.