## The 3-2-1 Backup Rule Keep 3 copies of your data, on 2 different types of media, with 1 copy offsite. This protects against hardware failure, theft, fire, and ransomware. ## Local Backups Use an external hard drive or NAS. On Windows, enable File History. On Mac, use Time Machine. Schedule backups to run automatically. ## Cloud Backups Cloud backup services like Backblaze, Google Drive, or OneDrive sync your files offsite automatically. Most cost less than $10/month. ## Test Your Backups A backup you have never tested is not a backup. Every few months, try restoring a file to make sure the process works. ## What to Prioritise Focus on irreplaceable data: photos, documents, tax records. Applications can always be reinstalled.