I have started my first job and apart from designing a network (which I have done) I'm to decide about back up solutions. I use Visio for diagramming but I have no idea whether a data back up should be in the diagram or not and how to do it. I have a database servers and I assume there should be something to show their back up storage. Any help greatly appreciated
I would approach this by thinking of the conceptual layers: "backups" are an application that uses the network. So if you're going to include a representation of backups, then you should have all(most?) network using applications shown. So if that's what the diagram is about, then yes, include backups. If it is, for example, a physical wiring diagram, then there'd be no applications shown.
I create several different layers of diagrams. This is required to completely document a network. I keep application specific information off of physical diagram. My physical diagram usually includes IP addresses as well, and some basic info about the devices themselves (Make, model, firmware, etc). I then make logical network diagrams that include applications, like Exchange, SQL, Backups, etc. Finally, I'll usually include a logical application diagram that explains rules for services, open ports, how clients connect, etc (For those applications listed above, like Exchange RPC/HTTP, Autodiscover, SMTP, etc). And I also have a logical application diagram for the backup server, saying what is backed up, when (schedules), how (agent, local or remote, xcopy, rsync, etc).