A lot has changed since the 3-2-1 backup rule was first introduced in the late aughts. At the time, the iPad was just a glimmer in Appleâs eye. Facebook had a quaint 500 million users. Taylor Swift had only released two albums. Blockbuster Video still existed, and Netflix shipped DVDs to your door. Unlike most things in technology, the rule has held up over the years. Itâs still the de facto stand
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