Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality Jun 2026

Output example:

to see if the utility can automatically detect the correct mapping for you. Run the Correct Smartctl Command Once you have the index (for example, ), use the (device type) flag: For SAS/SCSI Drives smartctl -a -d megaraid,11 /dev/sda For SATA Drives sat+megaraid smartctl -a -d sat+megaraid,11 /dev/sda www.couyon.net Summary Table: Syntax by Drive Type Drive Type Syntax Command smartctl -a -d megaraid,N /dev/sda smartctl -a -d sat+megaraid,N /dev/sda Troubleshooting Tips Error with smartctl on Dell/Megaraid · Issue #660 - GitHub Output example: to see if the utility can

The fastest way to bypass manual mapping is to use smartctl 's built-in scanning mechanism to discover the hidden topology behind the RAID wall. Run the following discovery command as root: sudo smartctl --scan Use code with caution. Alternatively, target your virtual disk node specifically: sudo smartctl --scan-open /dev/sda Use code with caution. Understanding the Scan Output Health status:" smartctl -H -d megaraid,$N $LOGICAL_DEV |

for N in $(seq 0 $((MAX_DISKS-1))); do echo "Checking $LOGICAL_DEV -d megaraid,$N" smartctl -H -d megaraid,$N $LOGICAL_DEV > /dev/null 2>&1 if [ $? -eq 0 ]; then echo "Disk $N exists. Health status:" smartctl -H -d megaraid,$N $LOGICAL_DEV | grep "SMART overall-health" echo "---" else # No more disks found break fi done specifically a Dell or MegaRAID controller.

This error occurs when the RAID controller’s firmware does not fully understand the S.M.A.R.T. response from the disk. It is most frequently seen with consumer SATA SSDs (e.g., Samsung 870 EVO) attached to older PERC controllers like the H730 Mini. The controller can identify the disk and confirm that SMART is enabled, but it cannot translate the actual S.M.A.R.T. data payload.

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.