Arq [1] with Google Cloud Storage here, scheduled nightly. See my other comments about pricing: https://news.ycombinator.com/item?id=13000979 https://news.ycomb

Arq [1] with Google Cloud Storage here, scheduled nightly. See my other comments about pricing: https://news.ycombinator.com/item?id=13000979 https://news.ycombinator.com/item?id=13000979. Arq supports multiple sources and targets. When a source is an external hard disk that is only occasionally plugged in, Arq does the sensible thing and backs up the disk when it's plugged in, but otherwise leaves it alone. [1] https://www.arqbackup.com https://www.arqbackup.com