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

Here is the corrected command structure:

cat /proc/scsi/scsi

Or:

smartctl -a -d megaraid,0 /dev/sda

The request specifically mentions "extra quality"—this refers to ensuring you get the full, raw SMART data from the drive, which is often crucial for detecting predictive failures before the RAID controller marks the drive as failed.

smartctl: open device: /dev/sda failed: Dell or MegaRAID controller

First, install StorCLI. Dell also provides , a rebranded version for their controllers. You can use the alien tool to convert .rpm packages for Debian/Ubuntu systems. Here is the corrected command structure: cat /proc/scsi/scsi

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 applies to any LSI MegaRAID card (e.g., 9260, 9361) under Linux. For HP SmartArray, use -d cciss,N ; for 3ware, use -d 3ware,N .

:You need to find the correct value for N (the Device ID). You can automatically list all detectable physical drives and their IDs by running: smartctl --scan You can use the alien tool to convert

If your controller uses a different addressing structure, you may need to specify both the enclosure ID ( E ) and the slot ID ( S ):

If running smartctl -d megaraid,0 /dev/sda returns an empty output or claims the device cannot be opened, your drive may be routed through a secondary virtual disk interface, or your slot ID configuration might start at a different sequence (e.g., counting from 1 instead of 0). Run your hardware utility ( storcli ) to verify the exact mapping. 2. SAS vs. SATA Passthrough