So I went to New Orleans last spring and copied on my three external back up drives each days events got home and downloaded on to my main computer . But one day months later I noticed that one of my days was not on my main computer.
Since then I had sold most of my old back up system and switched to the G dock nice system my drives were gone physically except for one and it was the one I never took out again. I looked up and the one day that was missing was there. Always have multiple back ups and save one out you never know.