February 21, 20179 yr Noticed on an exclamation mark on one of my older drives (3TB Green; 3y, 2m, 4d, 18h power on hours). Checked, said I had "Offline uncorrectable" errors with a count of 5. Ran an extended SMART test, said it "passed." How worried should I be about this? And what is failing? No other errors anywhere else. thevelourserver-smart-20170221-2151.zip
February 21, 20179 yr I believe this means that the disk found 5 sectors were bad and is not using them anymore... standard operation and safe.
February 22, 20179 yr Author Thanks for the input! Gonna try and get a couple more people to chime in (no offense intended, just want second and third opinions).
February 22, 20179 yr 29 minutes ago, CasanovaFly said: Thanks for the input! Gonna try and get a couple more people to chime in (no offense intended, just want second and third opinions). None taken, i'd do the same
February 23, 20179 yr The first few offline uncorrectable are usually followed soon after by more in my experience..... I generally replace them if the number keeps going up.
February 23, 20179 yr Author 17 hours ago, John_M said: This thread might help. I'm not sure what to take from the thread. Hope that the value returns to 0? (it hasn't yet) 8 hours ago, Chris Pollard said: The first few offline uncorrectable are usually followed soon after by more in my experience..... I generally replace them if the number keeps going up. Yes, I assume that's the case. Heck, that's the life of a hard drive. Piling up SMART errors until you die. I just want to know what kind of prognosis I'm looking at.
February 23, 20179 yr I think RobJ's point is that while Pending Sectors can eventually, on a write operation, either be declared good (and the count decremented) or bad and therefore reallocated (in which case the count is also decremented, but Reallocated Sectors is incremented), it is not unusual for an Offline Uncorrectable not to be decremented once the problem has been dealt with. Different manufacturers use the attribute differently. But it's changes in SMART parameters that matter much more than their absolute values.
February 25, 20179 yr Author So... watch and wait, basically? Like I said, no other changes in other SMART attributes and certainly no increase in reallocated sectors. The drive is marked for replacement if and when it dies (want to move to all Reds; the Greens are leftover from the long long ago), was just hoping to squeeze as much time out of it as possible. Thanks!
February 28, 20179 yr Author Recently restarted my server; the offline uncorrectable errors have disappeared and the value has been reset to 0. Odd.
February 28, 20179 yr I suspect the sectors have simply been reallocated -- has your reallocated sector count increased? If so, everything's fine.
February 28, 20179 yr Author 2 hours ago, garycase said: I suspect the sectors have simply been reallocated -- has your reallocated sector count increased? If so, everything's fine. No, no change in reallocated sector count. Good to know everything okay (for now).
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