Let’s say you have 1TB worth of files that you don’t need to access frequently (twice a year.) You have 3 different 1TB hard drives available so you make 3 copies of the files.
Scenario 1: Some sections on one of the drives are no longer correct.
Scenario 2: Some sections on two of the drives are no longer correct, but they don’t overlap.
What should you do in each of these scenarios?
In my mind a raid 4 would makes sense for this application but I’ve read that using raid for long term backup strategies is not a good idea, so I’m trying to figure out how to make this work with 3 separate identical copies.
My guess would be to simply overwrite the data on the damaged copy with one of the correct ones in scenario 1, but is there a good way to recover from scenario 2? What preparations do I need to do beforehand to ensure scenario 2 is recoverable? Is there any software I can use for such situations?
Thank you for taking the time to answer this.