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

When attempting to check the health of a hard drive behind a Dell PERC (PowerEdge RAID Controller) or MegaRAID controller using smartctl , you may encounter the following error:

Thus, the error message is actually : it tells you exactly what to do—add the -d megaraid,N option.

/dev/sda -d scsi # /dev/sda, SCSI device /dev/bus/0 -d megaraid,0 # /dev/bus/0 [megaraid_disk_00], SCSI device /dev/bus/0 -d megaraid,1 # /dev/bus/0 [megaraid_disk_01], SCSI device /dev/bus/0 -d megaraid,2 # /dev/bus/0 [megaraid_disk_02], SCSI device Use code with caution. When attempting to check the health of a

💡 Use -d megaraid,N where N is the physical disk index behind the controller (0,1,2...). Run smartctl --scan to find available devices.

The controller bundles multiple individual drives into a structural pool (Drive Group) and projects one or more virtual "Logical Volumes" to the operating system. Run smartctl --scan to find available devices

Here’s a bash one-liner to check all physical disks on the first controller:

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 . For HP SmartArray, use -d cciss,N ; for

Depending on your drive type (SATA vs. SAS) and controller version, you might need a slightly different flag: For SATA drives behind MegaRAID: sudo smartctl -a -d sat+megaraid,0 /dev/sda Using the SCSI generic path: still fails, try the generic bus path: sudo smartctl -a -d megaraid,0 /dev/bus/0 If you are using a very old version of smartmontools , consider updating it

Here's the general syntax:

Here’s a breakdown of you can use—whether for a knowledge base article, a forum post, or internal documentation.