Learn how to backup data safely in 2026 using the 3‑2‑1 backup rule, protecting files with multiple copies, media types, and ...

So I've always tried to follow the 3-2-1 rule for personal backups (3 copies of the data, 2 backups, 1 backup off-site). My NAS crashed a couple of years ago, right around the same time as a house ...

First mooted by US photographer Peter Krogh in a book about digital asset management for photographers, the 3-2-1 backup rule has been seminal in guiding organisations in their backup strategy. This ...