5 hours ago5 hr My setup has two 2Tb parity drives.One of them failed, and I was left with a single parity drive and an emulated drive, 'Disk 1'. I installed a new replacement drive, following the advice in https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/replacing-disks-in-array/. However, I encountered a problem where in the advice it says "If you started in Maintenance Mode, go to the Main tab and manually click Sync to start the data rebuild." I couldn't find anything at all that said 'Sync' in the Main tab under Maintenance Mode. I clicked on something which seemed similar and the parity process started. It took about 24 hours to complete. Then I rebooted, everything came up correctly, but Disk 1 is still there with its little X next to it.According to the Shares tab my data is still there (and it also shows up with the little blue box icon before Disk 1). It is listed as being held in 'Array'. Has it transferred to the two Parity disks or is it still being held in the 'emulation' in Disk 1? I also can't understand why Disk 1 shows the FS as being ntfs.I have a suspicion that all is not well and that my data is at risk. How do I make sure the data is being held properly on the two Parity disks and how do I then get rid of 'Disk 1'?There is probably an answer to this, but I have done a lot of searching and nothing promising has shown up. I may be using the wrong terminology. Anyway, any help is much appreciated.
5 hours ago5 hr Community Expert Why are you using NTFS for an array disk?Attach Diagnostics ZIP to your NEXT post in this thread.
5 hours ago5 hr Author I am puzzled by the 'ntfs' as I said in my post. I thought the parity drives had their own formatting standard?Anyway, here is the diagnostics file. thinkcentre-diagnostics-20260824-1436.zip
3 hours ago3 hr Community Expert The ‘little blue box’ is standard. You click on it to initiate File Manager.1 hour ago, stokeymj said:am puzzled by the 'ntfs' as I said in my post.The NTFS question still applies - it is the file system you have set for the emulated disk1.1 hour ago, stokeymj said:I thought the parity drives had their own formatting standard?Parity drives have no file system. Not sure what you did originally but disk1 is still being emulated so needs rebuilding to make it active again.. However since it is in NTFS format ideally you would copy it s contents elsewhere before rebuilding disk1 and copy the data back afterwards once it is formatted to a Linux style file system (probably want Xfs).Not sure why you have 2 parity drives protecting a single data drive. You may be better off using one of them as an additional data drive instead.
2 hours ago2 hr Community Expert You really need to start over with a new array, but we can still save that emulated NTFS data before your do.I don't see any disk being assigned as the new disk1 in syslog. It looks like you may have assigned or reassigned parity2, and it is the disk that was rebuilding.I don't see any disk that might be assigned as the new disk1 in your SMART reports either. Is that disk still attached?Is your parity disk SSD?
1 hour ago1 hr Author I am sorry, I’m used to dealing with disks on a Linux system, but I feel somewhat out of my depth dealing with Parity disks, arrays and the like.To try to answer your questions, one of the parity disks is SSD and the other is a regular disk. The failed disk was originally ntfs, but I thought it had been reformatted. Maybe when I first set it up, this disk was just a data disk and the SSD was the parity disk. I can connect another drive and copy the data from Disk1to it. I’m not sure exactly how to do this, but I can figure it out. Then I can rebuild the array, as you suggest. Maybe I should use the hard disk for the array and use the SSD as a data disk?Your help is very much appreciated.
1 hour ago1 hr Author A question: does a basic array consist of a data disk plus a parity disk? I think I have become confused about the difference between an array and parity.
1 hour ago1 hr Community Expert Just now, stokeymj said:A question: does a basic array consist of a data disk plus a parity disk? I think I have become confused about the difference between an array and parity.The parity disk(s) are optional in the array depending on if you want protection against disks failing., but you must have data disk(s).
1 hour ago1 hr Author How can I copy data from Disk 1 if it’s an emulation and it’s not mounted? Sorry, have just discovered the copy function. Edited 1 hour ago1 hr by stokeymj
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