https://www.theguardian.com/technology/askjack/2017/nov/09/cheap-usb-flash-drive-run-windows-local-hard-drive-memory-stick

Roger has bought a 1TB USB memory stick for only £8.99 and wonders if he could use it as a day-to-day drive

I have just had to replace my 1TB hard drive, which cost £25 all done and dusted, but I notice you can now get a 1TB USB Flash drive for £8.99. Could you use one of those as a normal day-to-day drive? I will use one as a backup, but if I mirror my drive on it, could I switch over to it if mit goes down again? Roger