I have a ST16000NT001 drive that was in my array, and failed.

Unraid reported 2050 errors and shut the drive down and would not spin it up.

I have replaced the drive in my array, and temporarily put the failed drive in another system to document the failure.

It is in a USB3 UASP SCSI dock.

The SMART metrics report it is now in perfect health. I ran a short self test using Hard Disk Sentinel and it passed.

Are there logs in Unraid that contain more details about the disk failure while it was in the array?

I found the new 7.2 log viewer, I see a variety of logs. I would think that faillog would be a candidate, but it is zero bytes:

I looked in dmesg, and found hundreds of lines like this:

Are there any more specific details logged anywhere?

I ran Diagnostics and looked at the file. There is a directory in the archive named "smart" which has the 6 drives currently in the system, but not the one that failed. Are the "Smart" reports retained on the server anywhere?

Edited December 8, 2025Dec 8 by timg11

Using the smart directory in the diagnostics as a guide, I searched for filenames with the disk name ST16000*

find / -name "ST16000*"

I found this which matched the failed drive:

/tmp/disklocation/smart/ST16000NT001-3LV101_ZRS2371E.json

I had Gemini interpret it, and it said

The most critical information pointing to the drive's failure is found in the Extended SMART Error Log:

• Error Description: "Error: UNC at LBA = 0x480295be8 = 19330063336"

  • UNC stands for Uncorrectable Error. This means the drive tried to read data from a specific Logical Block Address (LBA) on the disk and failed because the data was corrupted and couldn't be corrected using the drive's internal Error Correction Code (ECC).

• Log Details:

  • Error Number: 1 (The first and only logged error).

  • Lifetime Hours: 5448 hours when the error occurred.

  • Error Count: 1 logged count.

Please post the complete diagnostics zip

I found what I was looking for in the file I located.

In the future, I'll have to remember to download diagnostics before I remove a failed drive.