October 6, 2025Oct 6 Hello,I had a drive which was working, but I'd figure I'd replace it as it started to get old.I did the following.Clean shutdownReplaced drive physicallyPowered on UnraidReplaced the decommisioned drive in the WebGui with the new disk.Started array with parity rebuild as Unraid suggested.The parity rebuild went for 17 hrs successfully.And now I'm having a fresh and new 8TB drive working, but it's missing all the data which was on the decommisioned drive.Any suggestions, or am I screwed?Thanks vault-diagnostics-20251006-1032.zip
October 6, 2025Oct 6 Community Expert Did you format disk1 at any point before, during, or after the rebuild?
October 6, 2025Oct 6 Author 1 hour ago, JorgeB said:Did you format disk1 at any point before, during, or after the rebuild?No, just replaced the old drive in WebGui with the new drive and started the array which kicked off a parity rebuild.
October 6, 2025Oct 6 Community Expert Seems a bit weird since it says "md: import_slot: 1 wrong" instead of "import_slot: 1 replaced" and subsequently runs "/sbin/wipefs -af --lock /dev/sdh"
October 6, 2025Oct 6 Author 4 minutes ago, Mainfrezzer said:Seems a bit weird since it says "md: import_slot: 1 wrong" instead of "import_slot: 1 replaced" and subsequently runs "/sbin/wipefs -af --lock /dev/sdh"Yeah, and I also can see the new drive under the historical "Unassigned devices". I cannot remember this happening when replacing any other drive before.I currently have some 3-4 TB drives i replace when I have some cash to spend on new drive, so I have been doing this now for a couple of months (and drives), and it have always worked.....before now.Thanks for looking into this for me. Apprechiate it!
October 6, 2025Oct 6 Community Expert Solution Rebuilding a disk will rebuild whatever the emulated disk shows, so something happened before, but if you have the old disk, the easiest would probably be to just copy all the data from there to the new disk.
October 6, 2025Oct 6 Author 48 minutes ago, JorgeB said:Rebuilding a disk will rebuild whatever the emulated disk shows, so something happened before, but if you have the old disk, the easiest would probably be to just copy all the data from there to the new disk.Thanks JorgeB. I will do this.Can you recommend the best practice for doing this? I currently have all my SATA ports used. 4 on motherboard and 4 on my LSI-card. Is it safe to unplug one of the disks, reconnect my old disk, and copy contents to the new drive, or will i need the array with all the 8 disks, and then connecting this as the 9th disk? Then I must get an additional LSI-card. Was hopeing to avoid this for some time, but I might need to go shopping on ebay now.Thanks for your help and advice.
October 6, 2025Oct 6 Community Expert 10 minutes ago, tjo099 said:Thanks JorgeB. I will do this.Can you recommend the best practice for doing this? I currently have all my SATA ports used. 4 on motherboard and 4 on my LSI-card. Is it safe to unplug one of the disks, reconnect my old disk, and copy contents to the new drive, or will i need the array with all the 8 disks, and then connecting this as the 9th disk? Then I must get an additional LSI-card. Was hopeing to avoid this for some time, but I might need to go shopping on ebay now.Thanks for your help and advice.Easiest might be to use a USB dock to attach the drive (if you have one).
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