I didn't know the 3-2-1 rule was directly attributed to Peter Krogh, that was fascinating! I read his original DAM Book (for Digital Asset Management) and it was like a bible to me for managing my large and growing collection of photos. I got to meet him once at a Photoshop World conference, and got the updated version of his book, which I highly recommend for anyone that takes tons of pictures and wants to have them organized.
Chris.hone.5688 wrote: "I have two server rooms on site and in each server room I have a fire safe and a backup machine."
Be careful, Chris, that sounds like you might have all of your eggs in one basket, in the form of your "site" if it is a single building. Make sure you have something located elsewhere in case of a physical disaster to your site.
TB33T wrote: "I just backed up the pictures on my mobile phone. But that's mainly because my phone is out of storage."
Ironically, this is how most phones get backed up. Based on presence here at Spiceworks, I assume you are aware of this already. I consider my phone, much as I love it, to be a disposable item. Not that I plan on disposing it, but because it could be killed at any time. My photos are automatically downloaded to Dropbox when I'm connected to wi-fi, and I also do it manually when I need the most recent ones.