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smartctl -d megaraid,0 /dev/sda In this example, 0 is the logical drive number (N) associated with the disk drive /dev/sda . You may need to adjust this value depending on your specific configuration.
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. smartctl -d megaraid,0 /dev/sda In this example, 0
Here's an example:
To find the logical drive number, you can use the megacli command, which is a utility provided by LSI (now part of Broadcom) for managing MegaRAID controllers. Here's an example: To find the logical drive
Here's an example:
megacli -ldinfo -lall This command will display information about all logical drives configured on the MegaRAID controller. Look for the logical drive number associated with the disk drive you want to monitor. you can use the megacli command