How Do I interpret HDD S.M.A.R.T Results?

Posted by Marty on Ask Ubuntu See other posts from Ask Ubuntu or by Marty
Published on 2011-01-06T23:46:20Z Indexed on 2011/01/06 23:58 UTC
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My laptop has recently started to become a bit unreliable, and for some reason I started to suspect that my HDD was starting to fail. After a bit of hunting on the internet, I found Ubuntu's Disk Utility in the System menu and ran the long SMART diagnostics from this.

However, since the documentation for Disk Utility is very poor (palimpsest?), I'm not sure how to interpret the results:

Value over 50 million for a read-error rate, yet the test is good?!

For example, the Read Error Rate is over 50 million (!), yet the Assessment is rated "Good".

So would someone mind explaining to me how to interpret the results of these tests (especially the Normalized, Worst, Threshold and Value numbers)? And maybe tell me what they think of the results I got for my HDD? (Thanks)

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