How to use your Mac's built-in Time Machine tool instead of paying for cloud storage
Apple's Time Machine lets Mac users create local backups on an external drive without paying for cloud storage. The tool keeps multiple file versions and supports restoring both individual files and entire systems.
Commercial cloud storage has existed since 2006, when Amazon launched its Simple Storage Service. Services like Dropbox and Google Drive later made it popular to access important files from any device. Over time, cloud storage shifted from a convenience to a near necessity, often requiring a paid subscription once storage needs exceed a few gigabytes. Apple's iCloud offers only 5GB for free, which must cover photos, videos, and device backups from iPhone, iPad, and Mac alike.
For those who don't need cloud access to their files but still want reliable backups, macOS already includes a solution: Time Machine. This built-in utility has long allowed users to back up apps, photos, videos, and documents to an external hard drive or SSD. The first backup typically takes longer, while later ones run faster and can be scheduled hourly, daily, or weekly.
Setting up a drive
While Time Machine can technically back up to a partition of the internal drive, using an external drive is the safer option. Apple recommends a drive with at least twice the capacity of the Mac's internal storage, formatted with the APFS file system, which is not natively compatible with Windows. Setup happens under System Settings > General > Time Machine, where users add a backup disk and can choose to encrypt it with a password.
How it works and version history
Once a drive is connected, the first backup begins automatically and can take anywhere from a few minutes to over an hour. By default, backups run hourly, though the frequency can be changed to daily or weekly. Time Machine keeps multiple versions of the same file over time — hourly restore points cover the past 24 hours, daily points cover the past month, and weekly points cover periods before that. As the drive fills up, the system begins removing the oldest weekly backups to free up space.
Beyond restoring individual files through Finder, Time Machine can restore an entire Mac from a backup, which is useful when an internal drive fails or when migrating to a new computer.
