I see a lot of people mentioning different tools, but one thing you'll discover if you need to restore in the future is that it is crucial to distinguish between your "site" and your "data".
My main site runs a complex series of workers, CGI-scripts, and deamons. I can deploy them from scratch onto a remote node via fabric & ansible.
That means that I don't need to backup the whole server "/" (although I do!). If I can setup a new instance immediately the only data that needs to be backed up is the contents of some databases, and to do that I run an offsite backup once an hour.
My main site runs a complex series of workers, CGI-scripts, and deamons. I can deploy them from scratch onto a remote node via fabric & ansible.
That means that I don't need to backup the whole server "/" (although I do!). If I can setup a new instance immediately the only data that needs to be backed up is the contents of some databases, and to do that I run an offsite backup once an hour.