If the intent is to make an offline backup that can't be found easily you could just dig a hole in your local park. If it's a backup of, say, customer details,

If the intent is to make an offline backup that can't be found easily you could just dig a hole in your local park. If it's a backup of, say, customer details, that you need access to update sometimes, then the best option would be client side encryption with a cloud drive. The rest is a magic show of busy work that achieves no additional goals.