And turning on Apple’s Time Machine backup feature is easy-simply open System Preferences > Time Machine, click Select Backup Disk, pick a hard drive to hold your backups and you're done.
Unlike flossing however, once you set up backups on your Mac, they really don’t require your daily attention. Backing up your Mac is a bit like flossing your teeth: everyone knows they should do it every night, but too many people just never get around to it. You should be backing up the data on your Mac. External Hard Drives for Backups: What Is The Best Hard Drive to Use?
