I teach and have a one man saas business. I store similar data to yourself plus my business backups using rsync. I do this to an encrypted hard drive connected

I teach and have a one man saas business. I store similar data to yourself plus my business backups using rsync. I do this to an encrypted hard drive connected to a raspberry pi in my shed over wifi. The pi disk then gets backed up to Google drive. I think I pay £15 per annum for 100Gb Google drive. Ditching mp3s halved my backups. I'm not sure why you would store mp3s these days now unless you were making the music yourself? I imagine the Google drive story will change in the future but for now it's fine. I"m also a few months into syncthing and really getting value out of it. As in, there is my personal archive then there are docs I want to have a Dropbox experience with. Syncthing is great. I am replicating important docs between a few machines. When I get around to it they will be sent to the pi as well.