I like and use tarsnap (and have for years) but the lack of choice of backends is a downside. I've been waiting for something I can use to backup my workstation and laptops to a server at home as well as a server I have at $work (ISP). I've tried out all the usual applications but have yet to find something I'm happy with.
restic looks like it may fit the bill perfectly.
borg[1] has been referred to as "the holy grail of backups"[2] and is supported at rsync.net.[3]
The end result is encrypted, zero knowledge remote backups on a ZFS filesystem that you can SSH to.
I think everyone here knows all about rsync.net, but here are some examples:[4]
ssh user@rsync.net sha256 some/file
pg_dump -U postgres db | ssh user@rsync.net "dd of=db_dump"
ssh user@rsync.net du -Ahd2 some/directory
[2] https://www.stavros.io/posts/holy-grail-backups/
[3] http://rsync.net/products/attic.html
[4] http://www.rsync.net/resources/howto/remote_commands.html
command="/usr/local/bin/borg serve --append-only --restrict-to-path=/home/backup/bla",restrict ...
Do you get enough control do to that on rsync.net?
Yes. You have your own .ssh folder in your account and can edit (upload) your keys as you see fit.
Also, if you have our ZFS snapshots enabled, those are immutable/readonly - so even if you aren't using a sophisticated tool like borg, you still have snapshots of your data that are immune to attack - even from someone who knows all of your credentials.