Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality __full__ Direct

Resolving smartctl "Open Device Failed" on Dell MegaRAID Controllers

Where <N> is the (not the SCSI ID). N ranges from 0 to N-1 , where N = number of physical drives behind the controller. Resolving smartctl "Open Device Failed" on Dell MegaRAID

This error typically occurs when smartctl is unable to directly access the disk drive /dev/sda due to the presence of a RAID controller, specifically a Dell or MegaRAID controller. specifically a Dell or MegaRAID controller.