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I ran this HD utility called CrystalDiskInfo that displays some of the S.M.A.R.T. information on my drives. It is displaying a "Caution" warning on one of my drives because its "Reallocated Sectors Count" value is 263 (ideally it should be 0 as it is on all of the other drives I have tested).
I posted this question on another forum and the general consensus of the responders was to back up immediately and get rid of the drive. The drive is fairly new and only has 4575 hours on it. I just learned about this utility a few weeks ago, so I don't know when the reallocation of these sectors may have occurred, but it hasn't changed.
Can I trust this drive?
Update (9/27/2009): That reallocated sector count stayed at 293 until about a week ago when I noticed it went up by 1. Just yesterday, I noticed it's up to 659. It's under warranty and is going back to the manufacturer for replacement.
You should never trust any hard drive. 100% of drives are guaranteed to fail eventually. "Further, 36% of drives failed without recording any S.M.A.R.T. error at all, except the temperature, meaning that S.M.A.R.T. data alone was of limited usefulness in anticipating failures." Always have redundancy of some type. – endolith – 2016-01-21T21:11:59.440
3Thanks for pointing out CrystalDiskInfo! I like that they have a portable version. – Jared Harley – 2009-08-20T23:47:05.643