Evernote Backups to external HD

I have about 7,000 notes in back up. Many nested within folders. Has anyone found an easy way to back up all the notes to an external HD? If so is there a way it can be saved in PDF format to make for easy searching outside of the Evernote environment?

Thanks in advance

Quick googling found this

Thanks Bowline

I ended up with a service from CloudHQ which auto back ups to my dropbox, that seemed like the most easiest solution. Thank you for your reference, I enjoyed reading it.