August 5, 2025Aug 5 1 parity disk 12G (parity)1 data disk 256G (disk1)1 data disk 750G (disk2)The disk 1 (256G) kept going offline with errors and was showing emulated. so I left it offline. the disk would show up as unassigned disk. clearly not working right.I stopped the array.(i'm a little fuzzy on my memory here) the new 2T drive was showing as unassigned and I assigned it to the disk 1 slot.I added a 2nd parity drive and then started the array - so both disks were rebuilding. I realized my weak NAS was going to take forever. I canceled the rebuild. stopped the array. took the parity drive off of the array. and started the rebuild again.more context: it was urgent to replace the disk1 because disk 2 was also starting to have regular errors but never went offline. my immich database wouldn't start. so I decided to replace the drive before attempting to fix the immich database because I thought the disk could be the issue.Currently it's rebuilding. but none of my dockers are available and there are no shares/files.I really only use my unraid as an immich server.I'm really hoping I didn't screw up my data. Any help would be appreciated.btw I did recently upgrade the os to 7.1.4 it seemd to be fine afterward.unraid 7.1.4 server-diagnostics-20250804-1950.zip
August 5, 2025Aug 5 Community Expert Disk2 appears to be failing, and since there's only one parity, disk1 cannot be correctly rebuilt. Run an extended test on disk2 to confirm.
August 5, 2025Aug 5 Author ok I'm running an extened test. Is the array toast if disk 2 is bad since I only have 1 parity? I can see files that are on disk 2 if I navigate to them. but no shares are available. I expect disk 2 to have negative results and if this is the case is there anything to be done?
August 5, 2025Aug 5 Community Expert You may be able to recover some or most data, but possibly not all.
August 5, 2025Aug 5 Author External_USB3.0_201703310007F-0_0-20250805-1546.txt Here is the Smart test report.
August 6, 2025Aug 6 Community Expert Solution SMART test failed, confirming the disk is bad. You can try to copy what you can from both disk2 and the emulated disk1, files that generate an i/o error will need to be replaced, and then recreate the array.Another option would be to clone disk2 to a new disk using ddrescue, then use the clone to rebuild disk1. That should allow you to recover all the files, but some would be corrupt on both disks.
August 10, 2025Aug 10 Author ddrescue is a lifesaver thank you! Saved nearly all of my data! I got a lot of command line help from chatgpt as well.
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