I recommend at least 2 backups of your server files. Blogs that utilize mysql database backends are extremely simple to backup. Your entire database can be saved as an sql file, therefore for a complete system backup you just need to scp your server files to another machine. For instance my setup involves two machines, a web server, a mail server, and my laptop. With the scp command I backup my files from my web server to my mail server, and then from my mail server to my laptop. There is one interesting thing I have observed about scp: it utilizes the -P option; a capital. Whereas ssh utilized -p; in lowercase.