Not directly no, but some FS give you a hard time to recover the file structure, which in some cases is a big problem. You could probably recover files, but if

Not directly no, but some FS give you a hard time to recover the file structure, which in some cases is a big problem. You could probably recover files, but if the backups aren't stored in a tar/zip/... file, it will be hard to recover both the data and the structure.