An external drive is good for temporary but they are still volatile, meaning there is a possibility for errors i.e drive crashing, cant access data etc, a better long term solution is to burn your pics to DVD-Rs and store them safely away.
Hands-on: Samsung Galaxy Note 8 review
Be inspired by powerful National Theatre posters from the past 50 years
How to use the new Photos, Notes and Safari features in macOS High Sierra
Galaxy Note 8 : design, caractéristiques techniques, date de sortie