I'm about to update my Wordpress blog to the latest version. It was recommended that I backup my posts and database first. It seems like a plugin would be the easiest way for me to do this. What's the best plugin available for this? Searching Wordpress' site I found the BackUpWordPress plugin: http://wordpress.org/extend/plugins/backupwordpress/
Alternatively, if a plugin isn't recommended, how should I do this instead?