FSArchiver is a system tool that allows you to save the contents
of a file-system to a compressed archive file.
The file-system can be restored on a partition which has a different
size and it can be restored on a different file-system.
Unlike tar or dar, FSArchiver also creates the file-system when it
extracts the data to partitions.
Everything is checksummed in the archive in order to protect the data.
If the archive is corrupt, you just loose the current file, not the
whole archive.