If you take pictures, record videos, or just care about saving files—you need a backup plan. One crash, one drop, or one hacker can wipe everything. That’s where backup rules come in.
Let’s break down the 3 most common ones:
✅ 1. The 3‑2‑1 Rule (Good Starting Point)
This is the basic rule to protect your files.
It’s simple, and it works for most people.
Here’s what it means:
- 3 copies of your data (1 original + 2 backups)
- 2 different types of storage (like hard drive and cloud)
- 1 copy stored off-site (like online or at another house)
🔧 How to set it up:
- Save photos to your main computer (that’s copy #1)
• Use an external drive for backup (copy #2)
• Use a cloud backup (Backblaze, Google Drive, etc.) for off-site (copy #3)
🔄 2. The 3‑2‑1‑1‑0 Rule (Stronger Protection)
This rule adds two more layers for extra safety. It’s like putting your data in armor.
It means:
- 3 copies
- 2 different storage types
- 1 off-site copy
- 1 copy that’s offline and air-gapped (not connected to the internet)
- 0 errors after backup is verified
🔧 How to set it up:
- Keep your main files on your computer
• Back up to an external hard drive
• Back up to the cloud (off-site)
• Save an extra copy to a drive or disc not connected to anything (air-gapped)
• Run a backup check to make sure there are 0 errors
- Use tools like Checksums or Verify by Software
✅ Why it’s better:
- Stops ransomware from wiping all copies
• Helps in disasters like fire or floods
• 0 errors mean files are readable when you need them
🚦 3. The 2‑1‑1 Rule (Light Backup)
This is the bare minimum. It’s okay for small jobs or fast setups.
It means:
- 2 copies (main + backup)
- 1 storage type (usually hard drives)
- 1 off-site or cloud backup
🔧 How to set it up:
- Save files to your main computer
• Back up to an external drive, then sync to cloud
• Done—fast and cheap
⚠️ Why it’s weaker:
- Less protection if both local copies fail
• Not safe if ransomware hits your synced folders
• Good only for small or personal use
🧠 Simple Comparison Chart
Rule | Copies | Storage Types | Off-site | Offline | Error Check | Best For |
3‑2‑1 | 3 | 2 | ✅ | ❌ | ❌ | Everyday users, photographers |
3‑2‑1‑1‑0 | 4 | 2+ | ✅ | ✅ | ✅ | Pros, sensitive work, large jobs |
2‑1‑1 | 2 | 1 | ✅ | ❌ | ❌ | Beginners, light backups |
I stick with the 3‑2‑1 method for daily projects. It’s easy, fast, and protects 95% of my files.
But for client jobs or once-in-a-lifetime shoots, I move to 3‑2‑1‑1‑0:
How do you manage it?