Duckysownyou

That has me thinking now. If I formatted a drive or deleted a file is that data instantly removed from parity?

gottcha, maybe that is what happened then. I do not have any earlier diagnostics sorry.

Couple hundred GB of videos Im not sure, it was gone after the array rebuild

Disk 1 - ST16000VE000-2L2103_ZL2E24CM - 16 TB (sdg) Yeah, everything looked good on the emulated drive

Yeah it was disabled. Disk 2,4,5 never really had anything on them

my apologies I actually followed these instructions: Rebuilding a drive onto itself There can be cases where it is determined that the reason a disk was disabled is due to an external factor and the disk drive appears to be fine. In such a case you need to take a slightly modified process to cause Unraid to rebuild a 'disabled' drive back onto the same drive. Stop array Unassign disabled disk Start array so the missing disk is registered Important: If the drive to be rebuilt is a data drive then check that the emulated drive is showing the content you expect to be there as the rebuild process simply makes the physical drive match the emulated one. Is this is not the case then you may want to ask in forums for advice on the best way to proceed. Stop array Reassign disabled disk (optional) Tick the box to start in Maintenance mode. If you start the array in Maintenance mode you will need to press the Sync button to trigger the rebuild. The advantage of doing this in Maintenance mode is that nothing else can write to the array while the rebuild is running which maximises speed. The disadvantage is that you cannot use the array in the meantime and until you return to normal mode cannot see what the contents of the disk being rebuilt will look like. Click Start.to initiate the rebuild process.and the system will reconstruct the contents of the emulated disk, as far as I recall I did not select format. Its been a while so the details are a bit fuzzy.. (rebuilding the array took over a day) I just want to make sure parity is indeed working so I can minimize the chance of this happening again. and if it was my fault what I did so I dont do it again. appreciate the assistance. As I am fairly new to UnRaid.

Ahh, cant say that was intentional. thanks for pointing that out! yes, I had maybe 600GB on the whole array. I hadn't started migrating from my old NAS yet. The disk was no longer mountable or readable. when I rebuilt it informed me that the drive would be erased

new-diagnostics-20230207-1719.zip

Diagnostics attacheddiagnostics-20230207-1608.zip

Hello, My array had some file corruption due to a power loss during a large file transfer. I followed the below instructions from the UnRaid Wiki " The procedure If you are running a very old version of unRAID, such as v4.7 or older, skip down to the next section. Stop the array Unassign the old drive if still assigned (to unassign, set it to No Device) Power down [ Optional ] Pull the old drive (you may want to leave it installed for Preclearing or testing) Install the new drive Power on Assign the new drive in the slot of the old drive Go to the Main -> Array Operation section Put a check in the Yes, I'm sure checkbox (next to the information indicating the drive will be rebuilt), and click the Start button The rebuild will begin, with hefty disk activity on all drives, lots of writes on the new drive and lots of reads on all other drives All of the contents of the old drive will be copied onto the new drive, making it an exact replacement, except possibly with more capacity than the old drive." After the parity check completed I noticed that all my shares were empty and dockers lost data that was there before the rebuild. I am currently running another parity check. 52Mins in and it has not found any errors. Is the data lost? Thanks