No idea what kiwix is.

Downloading all of wikipedia for one language is abiut 90GB. Inhave it on a spare drive in case of an outage. That way if I need to research something I can still do.

Stable, fully foss and commonly used.

In my first install I had different home and root partitions. That was a big mistake. Once set, you cannot resize them properly and you are fucked if they are not perfect for your need. In my case the root partition got to small. After some time I just reinstalled with a single partition and would do that again.

What distro are you on?

I hope you have success. Ventoy is a cool tool, but those binaries suck!

Thanks for your explanation.

What does the license change actually mean? What are the differences?

As far as I know, by definition, at least restic is not incremental. It is a mix of full backup and incremental backup.

Thanks for your hint towards borgbackup.

After reading the Quick Start of Borg Backup they look very similar. But as far as I can tell, borg can be encrypted and compressed while restic is always. You can mounting your backups in restic to. It also seems that restic supports more repository locations such as several cloud storages and via a special http server.

I also noticed that borg is mainly written in python while restic is written in go. That said I assume that restic is a bit faster based on the language (I have not tested that).