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Uncorrectable Sector Count

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Beginner
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I have an external (USB) 1TB HP SimpleSave drive that drive monitor has been displaying an increasing number of uncorrectable sector counts. Over the last few days the number has increased from 1 up to 45. Drive health has dropped from 96% to 30%
The information I got from the site seems to indicate that the drive is about to fail and needs to be replaced.
Today I checked and the drive health is now 100% (there are 0 uncorrectable sector counts.)

I have read reports that some drives will not work through a USB connection or information may be inaccurate. Is this the problem I am seeing here or is something else going on.
The dive in question has (according to DriveMonitor) only 305 POH however, the temperature information seems a little high (42-46 when not active) compared to my internal drives. This is a 3.5" drive in a well ventilated case compared to my 2.5" (500GB 7200) drives packed tightly into my hp8000.

Any info to help me figure out what is going on here would be appreciated.

Kim

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Forum Hero
Posts: 613
Comments: 8747

Kim,

If you can find out who manufactures the actual drive, you can go to the makers website and download some testing tools.

Alternatively you could download the free version of Hard Disk Sentinel and see if it agrees with ADM.

My external drive runs hotter than my internal ones. Don't forget your internals probably have fans in the PC case, the external one either uses air flow or the metal case as a heatsink to get rid of excess heat.

Frequent Poster
Posts: 286
Comments: 535

I have a problem with USB drives and ADM in that it makes the USB drive unusable - it is possible that you may be seeing another side effect of the same, so far, unidentified issue. Since reporting this there has not been an update/fix to ADM so at this time I am unable to use it.

Beginner
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Comments: 11

Seagate tells me this type of software is often unable to be accurate with regard to sector information. My USB drive is always reported as critical. All I can do is eliminate this aspect of monitoring. Too bad, it seemed like a nice idea...

Frequent Poster
Posts: 286
Comments: 535

Hi John,

You can set ADM to take the current SMART values as the baseline so you can monitor the changes. That way the Drives health will be reported as 100% OK until it changes from the set baseline.

You have to add the Raw Offset column to the display and type in a negative value to offset the current status then the disk returns to 100% OK and one can watch for changes.

Beginner
Posts: 0
Comments: 11

Thanks for the information RayG!