The 3-2-1 Backup Rule for Business (2026)
What it means
Keep three copies of your data, on two different media types, with one copy offsite or offline. The third copy survives the event that takes out the other two.
A real setup
Files in Microsoft 365 (copy 1), nightly sync to a local NAS (copy 2), and a versioned cloud backup offsite (copy 3) — under $50/month for a small office.
Test it
Restore a file each quarter to prove it works. IT Cares can design and monitor a 3-2-1 backup for your business.
Action checklist
- ✅ Keep 3 copies of important data
- ✅ Use 2 different media types
- ✅ Store 1 copy offsite or offline
- ✅ Make the offsite copy ransomware-resistant
- ✅ Test restores quarterly
FAQ
What is the 3-2-1 backup rule?
Keep three copies of your data, on two different media types, with one copy offsite or offline. It protects against hardware failure, theft, fire and ransomware simultaneously.
Is cloud backup enough on its own?
Cloud backup is a great offsite copy, but pairing it with a local copy gives faster restores and a fallback if your internet or cloud account is unavailable.
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