LongJohn

Thank you, you're right! I forgot to pause a scheduled script to move data. I will stop and replace the disk.

It appears that disk3 has reached 1.57TB of data and browsing the disk shows the expected data, albeit only 1.57TB of the nearly 8TB it previously held.

Hi itimpi, that explanation makes sense. Fortunately, I have backups of the data. However, I'm still stuck in the position of not knowing the correct way forward to end the data rebuild and then replace the drive. My options appear to be: Wait 100 days for the data rebuild to complete. SMART warning indicates this drive has issues - perhaps this isn't the best option. Perhaps it won't be able to complete at all. Pause the data rebuild. I'm not sure what comes after that if not options 1 and 3. Cancel the data rebuild which carries the warning "WARNING: canceling may leave the array unprotected!" I believe I can find a guide to replacing the drive if you'd please assist me in understanding the choice I should make regarding ending the data rebuild. Thank you again for your help.

Hi itimpi, thank you for the additional detail. Does that mean the parity drives no longer have the data that was on disk3 prior to format? Is it safe to cancel the data rebuild and proceed with replacing the drive? What are the correct steps?

Hi trurl, Thank you for your help! Ok, that makes sense. It appears I misunderstood data rebuild to mean it would rebuild the drive from parity to achieve the state before disk3 had a red x. After formatting, disk3 showed as empty on the MAIN page. After starting the data rebuild, I watched it filling up from empty on the MAIN page at expected speeds. By morning it had reached 1.4TB used and speeds had dropped. It has not increased from there (nominally perhaps) in over 24 hours. Is it safe to cancel the data rebuild and proceed with replacing the drive? What are the correct steps? No other drives show SMART warning ( 👎 ) on the DASHBOARD page.

Hi All, I’m a beginner Unraid user and I noticed that Disk3 of my array had a red X. My Unraid version is 6.12.13 and I have dual parity drives. I was hoping it was a cable issue, not a drive failure, and I took the following steps as best that I can remember: Powered down my server Reseated the cables on Disk3 Powered on the server Stopped the array Unassigned Disk3 Started the array in maintenance mode Stopped the array Assigned Disk3 back Started the array Formatted Disk3 Started data rebuild The data rebuild began ok with speeds of 180MB/s but by morning the speeds had slowed to between 100KB/s to 1MB/s and the estimated time to completion was 100 days. Additionally, Disk3 went from a green circle to orange triangle! and says “device contents emulated click to spin down device”. Now I suspect I’m having my first drive failure and have a replacement drive available to replace it but I’m concerned I may take the wrong next steps. I’ve included my diagnostics and would appreciate your help. Thank you! unraid13100-diagnostics-20260124-0908.zip