I set up my NAS a while back and I just started backing stuff up. I plan to copy the files using TeraCopy to an external HDD since I mainly use Windows. That HDD will be turned off and only used when backing up.
My question is how do I verify the files so that they don't have any silent corruption? In the unlikely event where I have to rebuild my NAS (I am using OMV + SnapRAID) from scrath, then that backup is my last copy. I want to make sure it doesn't have any corruption on it. I tried using ExactFile but it's very rudimentary, where if I add a file, or remove a file, or move a file, or update a file I have to rebuild the whole digest file, which can take days. I'm looking for something very similar but can also handle incremental updates.
Does anyone have any advice?