USB drive is the size of a flattened lipstick. So simple to use!
I do think that I'd feel better if he handled the backup to his server himself I repair printers and when on a job, if the company has a network and I need some settings changed for the printer to work more efficiently, I become/act "I never saw one in my life. I have friends that set up computers and networks. They tell war stories about changind some small part in a computer, the settings are different, and 6 hours later, the system is back running full speed.
IOW, I am chicken to mess with someone else's network. I know back-ups are easier than changing settings for new boards or devices. I still don't like messing with something unless I do it often and really know what I am doing.
I don't feel like I will damage anything, havent so far in the last 20 years (Vic-20, TSR-80? beginning computer) It's one of those things, learn and do it well or admit the work is for someone in a different pay grade.
I still do lots of things I have never done. One of the best ways to learn.