[yaseenk]

Looks like https://www.arqbackup.com/ might meet your needs. I haven’t used it personally though, my only reservation has been that it’s not open source.

The unofficial google drive linux CLI supports encryption with custom keys too.

[patrickdavey]

I got burgled back in July and the burglars came somewhat close to getting everything, fortunately they didn't take my NAS. After discussing with friends, I did buy Arq and I've been _very_ happy with it.

I then went and bought 1TB of Google Drive and now all my photos and anything else is backed up onto both Google Drive and my NAS. It's all encrypted so yeah, should be safe enough. The handy thing about the 1TB Google space is that it's shared amongst all their products, so, I don't need to think about running out of Gmail space either.