I'm off on holiday for a couple of weeks in January (I know a long way off ). I'll be taking my Nikon DSLR and a 4k GoPro and will be taking lots of photos & videos. Whilst I'll be taking quite a few SD cards is there any device I could use to create a backup? Wi-Fi isn't really an option as it's a cruise and the cost of Wi-Fi is around £25 per day and by all accounts speed and latency are terrible. It is possible to take a laptop and at the end of each day copy the days events onto it, but is there another option? - essentially what I'm looking for is a HDD & SD card reader/writer in one. Edit; sorry, just reading through this it's not very clear, not knowing if such a device exists I can't really be any clearer. Looking on Google just comes up with various rugged drives/enclosures. Sounds hilarious when I read it back but a HDD with SD card slot that will just copy the contents of the SD card each day.