macOS High Sierra

Back up your files with Time Machine

With Time Machine, you can back up your entire Mac, including system files, apps, music, photos, emails, and documents. When Time Machine is turned on, it automatically backs up your Mac and performs hourly, daily, and weekly backups of your files.

When you use Time Machine on a computer using Apple File System (APFS), Time Machine not only keeps a copy of everything on your backup disk, it also saves local snapshots of files that have changed on your internal disk, so you can recover previous versions. These local snapshots are saved hourly (unless you deselect Back Up Automatically) and they’re stored on your computer’s internal disk.