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How to follow the 3-2-1 backup rule for NAS and protect your data
Should an issue arise with their cloud storage provider or physical media, that's when regret hits and the 3-2-1 backup rule ...
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The 3-2-1 backup rule is broken — here's how I safeguard my data
The 3-2-1 backup rule has been around for over two decades, and it states that you need to store three copies of your data across two different kinds of media, and one at an offsite location.