I’m looking into getting an extra backup solution for my laptop, and a backup solution for my NAS/media server. Currently, my laptop backs up to my local NAS, and Proton Drive, while my server has no additional backup.
Is using something like Backblaze B2 actually private and secure, especially if I use the personal encryption key I can set? Or is there another online service that may be better and more private?
If you encrypt your data before uploading it to B2 you should be fine. Unless you run it yourself on your own server, you can’t be sure that your data will be unreadable by anyone poking around unless it’s encrypted.
I’ve been using B2 for my offsite backups for a couple of years now (since 2018), and both Duplicity and Restic encrypt data before shipping it over. I wrote about it here.