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On 08/07/2013 17:39, Paul Hartman wrote: |
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> On Thu, Jul 4, 2013 at 9:04 PM, Paul Hartman |
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> <paul.hartman+gentoo@×××××.com> wrote: |
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>> ST4000DM000 |
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> |
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> As a side-note these two Seagate 4TB "Desktop" edition drives I bought |
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> already, after about than 100 hours of power-on usage, both drives |
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> have each encountered dozens of unreadable sectors so far. I was able |
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> to correct them (force reallocation) using hdparm... So it should be |
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> "fixed", and I'm reading that this is "normal" with newer drives and |
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> "don't worry about it", but I'm still coming from the time when 1 bad |
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> sector = red alert, replace the drive ASAP. I guess I will need to |
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> monitor and see if it gets worse. |
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> |
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Way back when in the bad old days of drives measured in 100s of megs, |
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you'd get a few bad sectors now and then, and would have to mark them as |
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faulty. This didn't bother us then much |
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Nowadays we have drives that are 8,000 bigger than that so all other |
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things being equal we'd expect sectors to fail 8,000 time more (more |
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being a very fuzzy concept, and I know full well I'm using it loosely :-) ) |
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Our drives nowadays also have smart firmware, something we had to |
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introduce when CHS no longer cut it, this lead to sector failures being |
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somewhat "invisible" leaving us with the happy delusion that drives were |
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vastly reliable etc etc etc. But you know all this. |
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A mere few dozen failures in the first 100 hours is a failure rate of |
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(Alan whips out the trust sci calculator) 4.8E-6%. Pretty damn |
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spectacular if you ask me and WELL within probabilities. |
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There is likely nothing wrong with your drives. If they are faulty, it's |
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highly likely a systemic manufacturing fault of the mechanicals (servo |
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systems, motor bearing etc) |
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You do realize that modern hard drives have for the longest time been up |
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there in the Top X list of Most Reliable Devices Made By Mankind Ever? |
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |