September 19, 2025Sep 19 Hello, I already posted this in the German section. But maybe the germans aren't as active as the internationals.During my vacation, one of my 10 TB hard drives failed. It just makes a clicking noise now, so it’s probably beyond saving. I’ve already gotten a replacement. But during the data rebuild, it looks like the next drive is about to fail. It shows a lot of errors and writing to the new drive is taking ages.What options do I have? Or rather, what makes the most sense?- Should I first remove the newly problematic drive and clone it to another one?- Just let it keep running and hope the rebuild time goes down? (no Change since almost 2 days and 13h)- Shut down, connect the newly problematic drive to another (possibly faster) SATA port or controller? (But if I do that, can I continue the rebuild from the point where it stopped, or does it start from scratch again?)- Replace the second drive as well, create a completely new array, and then try to recover as much as possible from the swapped drive?I hope you have some recommendations for me.Thank you!
September 20, 2025Sep 20 Author Thank you for the quick reply homeserver-diagnostics-20250920-0940.zip Edited September 20, 2025Sep 20 by burzlbaum
September 20, 2025Sep 20 Community Expert Disk4 is failing and needs to be replaced, so disk1 cannot be correctly rebuilt. If old disk1 has really failed, there may be some data loss.
September 20, 2025Sep 20 Author The old disk 1 is dead for sure!So what is the best way to recover as much as possible?Or should I try to create an image of the disk 4? And rebuild it witch a new disk?
September 20, 2025Sep 20 Community Expert You can see if the rebuild finishes; Unraid will skip the read errors, so there could be some missing data/corrupt files on the rebuilt disk.Other option would be to clone disk4 with ddrescue, then use the clone to rebuild, which would likely have a similar result, but ddrescue may be able to recover some more data.
September 20, 2025Sep 20 Author Waiting if rebuild finishes means I have to wait for 500+ Days to finish. Or is there a way to ignore the Disk 4 rebuilding?
September 21, 2025Sep 21 Community Expert You cannot ignore disk4 unless you don't mind losing all the data from the disk being rebuilt. Of course, you can still lose it anyway if that disk is in a very bad state, a rebuild requires parity and all the remaining disks to be readable.
September 21, 2025Sep 21 Author Ok thanks for clearing this. I just ordered a new Disk to clone disk 4. hope it will work.
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