I have found myself pondering this topic more than once so I wonder if others have tools that served them well.
In the current case I'm using an exFAT formatted external drive. ExFAT because I need to use it between windows and MacOS (and occasionally Linux) for reading and writing so there doesn't seem to be a good alternative to that.
exFAT is certainly not the most resilient filesystem so I wonder if there are things I can use on top to improve
- the detection of data corruption
- the prevention of data corruption
- the recovering from data corruption
?
For 1 actually a local git repository where every file is an LFS file would be quite well suited as it maintains a merkle tree of file and repository hashes (repositories just being long filenames), so the silent corruption or disappearance of some data could be detected, but git can become cumbersome if used for this purpose and it would also mean having every file stored on disk twice without really making good use of that redundancy.
Are you using any tools to increase the resilience of your data (outside of backups) independent of what the filesystem provides already?