I recently replaced my 12tb Hard drive which was faulty with a 10tb drive and when I format it it does nothing.
Where am i going wrong?
You are going wrong by trying to use a 10 TB drive instead of a 12 TB drive. To restore the volume to a redundant/healthy status you need to replace the 12 TB drive with another 12 TB model.
I recently replaced my 12tb Hard drive which was faulty with a 10tb drive and when I format it it does nothing.
Where am i going wrong?
You are going wrong by trying to use a 10 TB drive instead of a 12 TB drive. To restore the volume to a redundant/healthy status you need to replace the 12 TB drive with another 12 TB model.
I thought so. Can I replace the other 12TB with a 10TB so it starts working as normal or would I need to format the whole NAS?
Can I replace the other 12TB with a 10TB so it starts working as normal or would I need to format the whole NAS?
Replacing the remaining drive won't help - that will just cause the volume to fail completely.
Is this a new setup with new drives? If it is, then you could just wait for a replacement 12 TB.
You could also do a factory reset/reformat with all the existing drives in place. You'll waste 2 TB of the 12 TB drive (and lose 2 TB of volume space), but you could regain that later by upgrading the 10 TB drive to 12. If you have another 10 TB drive, you could also alternatively do a factory reset with 2x3TB+2x10TB. Both would give you the same size volume - 16 TB (~14.5 TiB) instead of the 18 TB (~16.3 TiB) volume you have now).
