August 26, 2025Aug 26 So i had a 12TB drive that was throwing errors so ive bought another 12TB drive online to replace it but now that ive installed the drive, it shows as 11.8TB and i cant start the array. Unfortunately after taking the old drive out, it seems it has fully given up and wont initialise again if i plug it back in, so i need to rebuild the data from parity.Is there anyway to achieve this without spending more money?Here's a screenshot of my array.
August 27, 2025Aug 27 Author Since my old drive no longer functions, it seems my only option is to just get a different drive, since using "New Config" wouldnt allow for the data rebuild. Is this correct?I believe that drive had only used about 9-10TB so it shouldnt really matter that its 200MB smaller, but if theres no way around it then it is what it is
August 27, 2025Aug 27 Community Expert The new disk is physically smaller, so no way to use it for a rebuild; you need a larger disk. Another option, if there's enough frees space, would be to move all the data from the emulated disk to others, then do a new config without it and resync parity.
August 27, 2025Aug 27 Author I believe i should have enough space on my other drives, how would i go about moving all the files off the emulated drive?
August 27, 2025Aug 27 Community Expert Solution You can use the mover for that:https://docs.unraid.net/unraid-os/release-notes/7.0.0/#using-mover-to-empty-an-array-disk
August 27, 2025Aug 27 Author okay, thanks so theres 9.8TB used on that emulated drive and 13TB free on my other drives so it should be fine, itll just take a while to transfer off. Once ive sorted this, how would i go about getting files moved onto that drive again, or should i just leave it and itll figure itself out?
August 27, 2025Aug 27 Community Expert 2 hours ago, just_rocs said:Once ive sorted this, how would i go about getting files moved onto that drive again, or should i just leave it and itll figure itself out?Unless there's a specific reason not to, you can leave them on the other disks.You can then do a new config with the smaller disk in place of the other one and resync parity to bring the array back to a protected state, you will have to format the new disk, and after that any new data can go to it.
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