Yes, you can export all notes/notebooks as an .EXEX file. Granted this is a file extension that only Evernote uses, but there are converters out there. Also, I

Yes, you can export all notes/notebooks as an .EXEX file. Granted this is a file extension that only Evernote uses, but there are converters out there. Also, I keep copies of the most valuable data (photos, documents that I really want to keep safe) both offline and in online cold storage.