Areca Backup
Full user review
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"Does a certain part of the backup process well"
Pros
This can make a backup and keep it up-to-date by just changing the parts that need to be updated. It can cut large files into pieces and encrypt the backup (including the filenames) so it is completely safe. The backup process is reasonably fast.
Cons
It's not very effective for making a backup to a (mapped) network drive, because the backup process involves many write and read operations (more than just creating the backup files and saving them). No WebDAV compatibility.
Summary
I use this to make a local backup, which I then transfer to a web drive with a WebDAV synchronizer (in this case, Gladinet). Areca offers to save the backup to an FTP server, but they are not easily available anymore and have been superseded by WebDAV, whcih Areca can't handle.
The backup process is fast and seems to be accurate. With a strong password (or a pass-key -- but you need to make a backup of that somewhere else) the files are probably very safe.