How to copy files, only those that have been changed and new ones?

Question

Backup

I copy files from a network drive to an external hard drive, I used to delete the entire previous time and over the weekend they copied the whole (700 gigabytes) network 100 Mbps, now due to the fact that it is long and the Internet slows down when copying, it is necessary to copy to the old time only those files that either have been changed or new added, how to do it in Windows?

Answer 1

Use the Robocopy utility with options.