Backup Software Download Guide

There are two main approaches. File backup copies selected folders, like documents, photos, and projects, and is perfect for protecting the data you actually care about. Disk image backup captures your entire drive, including the operating system, programs, and settings, so you can restore a dead machine exactly as it was.

Many people use both: regular file backups for day-to-day safety, plus an occasional full image so a complete reinstall isn't needed after a hardware failure.

The most reliable strategy is simple to remember. Keep 3 copies of your data, on 2 different types of media, with at least 1 copy stored offsite (such as the cloud or a drive kept somewhere else). This protects you against drive failure, theft, fire, and ransomware all at once. No single backup, no matter how good the software, gives you that resilience on its own.

To save time and space, most tools don't recopy everything every run. A full backup copies all data. An incremental backup only copies what changed since the last backup, making it fast and small. A differential backup copies everything changed since the last full backup. Incremental schedules are the most efficient for daily use; just make sure you periodically test that a restore actually works.

You can back up to an external USB drive, a network-attached storage (NAS) device, or a cloud service. Local backups are fastest to restore from; cloud backups protect against physical disasters but depend on your upload speed. Combining a local drive with a cloud copy satisfies the offsite part of the 3-2-1 rule neatly.

A backup you've never tested is a backup you can't trust. At least once, perform a test restore of a few files to confirm the process works and the files open correctly. Many tools offer verification that checks the backup's integrity automatically. Schedule that on, and check the logs occasionally to make sure jobs are actually completing.