To fix this, you must use the -d megaraid,N flag to "pass through" the RAID controller and address a specific physical disk ID (N). 1. Identify the Correct Device ID (N) The number
For production servers, manually checking smartctl on each physical disk is tedious. Consider:
The error message suggests that the disk drive is behind a RAID controller, which is a hardware component that manages multiple disk drives as a single logical unit. In this case, the controller is a Dell or MegaRAID device. The smartctl utility needs to communicate with the disk drive through this controller, but it doesn't know how to do so by default.
Here's an example:
Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality ((new)) May 2026
To fix this, you must use the -d megaraid,N flag to "pass through" the RAID controller and address a specific physical disk ID (N). 1. Identify the Correct Device ID (N) The number
For production servers, manually checking smartctl on each physical disk is tedious. Consider: To fix this, you must use the -d
The error message suggests that the disk drive is behind a RAID controller, which is a hardware component that manages multiple disk drives as a single logical unit. In this case, the controller is a Dell or MegaRAID device. The smartctl utility needs to communicate with the disk drive through this controller, but it doesn't know how to do so by default. To fix this
Here's an example: