File backup: the simple guide to never losing important data again
Most people only think about backups after losing something important — a broken hard drive, a stolen laptop, ransomware that encrypted a company's files. Backup isn't about "if" something will go wrong, it's about being ready when it does.
The 3-2-1 rule, in practice
It's the most widely used standard worldwide: 3 copies of your data (the original plus 2 backups), on 2 different types of media (external drive plus cloud, for example), with 1 of them off-site (to survive fire, theft, or flooding).
Free options to start today
- OneDrive / Google Drive: automatic folder sync, with a free plan of 5-15GB
- Windows File History: automatic backup to an external drive, built into the system
- External drive with a manual monthly copy: simple, but requires discipline to not forget
The most common mistake: a backup nobody tests
A backup that's never been restored is a bet, not a guarantee. At least twice a year, try restoring a test file from your backup to confirm it actually works when needed.
For small businesses: backup isn't optional
Losing your customer database, invoices, or financial spreadsheets can mean months of lost work. If your business still depends solely on one computer's disk, that's the first thing worth fixing.
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