That's just a copy without the needed measures to insure you don't lose it all.
Proof? Just read the heart stopping stories in these forums.
Is a second copy enough? Then you're OK, but don't count on it to replace a proper backup.
Bob
Bought new Dell Dimension 8400 with 250 GB hard drive and XP Professional.
Thinking of purchasing a 250 GB or 300 GB external drive for backup. I like what I have read about the Dantz Retrospect 7 Professional software. Will definitely automate backup. Which drive would you purchase? LaCie or Maxtor?
Appreciate you helping me out!

Chowhound
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