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

To effectively manage your drives behind a Dell PERC or MegaRAID controller, keep these best practices in mind:

smartctl -a -d megaraid,0 /dev/bus/0 smartctl -a -d megaraid,1 /dev/bus/0

: Even if you have multiple physical drives, you usually use the same logical handle (e.g., ) for all of them; the part is what differentiates the physical disks. MegaCli commands to check for specific media or predictive failure errors? Check for Megaraid (and other Physical disk/raid) problems To effectively manage your drives behind a Dell

Fix: smartctl "Open Device /dev/sda Failed" on Dell MegaRAID Controllers

), while the physical disks are hidden behind the controller. To access a physical drive's SMART data, you must tell which specific physical disk index ( ) to query. Thomas-Krenn.AG How to Resolve the Error To successfully query your drives, follow these steps: Identify the Physical Disk Index ( You need the (DID) of the physical disk. Use one of the following tools: To access a physical drive's SMART data, you

megacli -ldinfo -lall

Always use:

You can view event logs for error detection with a command like MegaCLI -AdpEventLog -GetEvents -f events.log -a0 .

Open the configuration file (usually located at /etc/smartmontools/smartd.conf or /etc/smartd.conf ): nano /etc/smartmontools/smartd.conf Use code with caution. Comment out any default scanning lines like DEVICESCAN . 0 /dev/bus/0 smartctl -a -d megaraid

The error message occurs because smartctl is trying to talk directly to a virtual RAID volume (e.g., /dev/sda ) instead of the physical hard drives hidden behind the controller.

You cannot just guess the number N . You need to know the physical drive ID recognized by the MegaRAID controller.