The 3-2-1 Backup Rule is Dead: Welcome to Immutable Recovery

For two decades, IT professionals preached the 3-2-1 Rule:

• 3 Copies of data.
• 2 Different media types.
• 1 Copy offsite.

In 2025, this rule is insufficient. It has a fatal flaw: Connectivity.

Modern Ransomware gangs are sophisticated. They do not just encrypt your laptop. They enter your network, scan for your backup servers, and encrypt them first. They steal your Admin credentials and manually delete your cloud backups.

Then, once they have destroyed your safety net, they lock your production servers and demand a ransom.

The Solution: Immutability

To counter this, Digital Sanctum enforces Immutable Backups (Object Lock).

Immutability means "Write Once, Read Many." When we write a backup to our secure vault, we apply a digital time-lock (e.g., 30 days). During this window, that file cannot be modified or deleted by anyone.

• Not by you.
• Not by us.
• Not by a hacker who has stolen the Global Admin password.
• Not by a rogue employee trying to sabotage the firm.

The file system literally rejects the "Delete" command.

The Architecture of Resilience

We deploy a "3-2-1-1-0" strategy:

1. 3 Copies of data.
2. 2 Different media types.
3. 1 Copy Offsite (Cloud).
4. 1 Copy Immutable (The Air Gap).
5. 0 Errors on automated daily recovery tests.

Why "Sync" is Not "Backup"

A common objection is: "I don't need backups, I have OneDrive/Google Drive."

OneDrive is a Synchronisation tool, not a Backup tool. If you get a virus that corrupts your local file, OneDrive dutifully synchronises that corruption to the cloud. You now have two corrupted files.

Backup must be separate, versioned, and immutable.

Conclusion

Your backup is your final line of defence. If it is connected to your network, it is vulnerable. We architect systems where the recovery vault is invisible to the rest of the network, ensuring that even in a total catastrophe, we can restore your Sovereign Infrastructure within hours, not weeks.