Backing up your Mac is not just something you do when testing betas like macOS Tahoe; it is an everyday essential if you want to avoid risking losing irreplaceable work. Maybe you think you don't need ...

Periodically backing up your computer is always a good idea. You want to make sure your documents, photos, and files are protected in case of hardware failure, software glitches, or malware attacks.

Automated Time Machine backups should be a “set it and forget it” strategy. Once enabled, macOS warns you only when something goes wrong. No alerts, and–almost always–the backups have continued apace.