Versioning is optional and just becomes part of the file data. Write garbage into that and it'll still take a lot to fix it. Anyway, there's plenty of filesyst

Versioning is optional and just becomes part of the file data. Write garbage into that and it'll still take a lot to fix it. Anyway, there's plenty of filesystems that have versioning built in as well. Besides, I've been tasked with recovering the specific state of a database where every version of every object was available, and it was only some 200k or so records. That took me about 2 weeks. (mostly for writing code that could find a consistent version of the whole thing)