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little confusion as to smart status report


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#1
mikeloeven

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Hardware ECC Recovered 26 102799153 Watch
Warning: Hardware ECC Recovered is below the average limits (31-100).


i am a bit confused as to wether or not this repersents a problem with the drive it's self or can these errors be caused on external drives by unplugging or turning them off without using the safley remove hardware box ???
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#2
Neil Jones

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This is a SMART status message.
SMART Is not 100% reliable, implemented differently on different brands of drives and there is no standard.

Hardware ECC Recovered is unique to each manufacturer and, realistically, doesn't mean anything.

If in doubt, replace the drive, but if it's important storage wise, make another backup.
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#3
mikeloeven

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i know basically what it means. it means that the parity bit of some data somewhere was mismatched but the data was resent or reread and matched. or somthing like that. at the moment my drive now going on 2 years passed with a 94% health test so overall it seems to be stable. my question is can the ecc error be caused by quick removal or forced dismounts of a volume when the drive is powered down or unplugged by surprise
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#4
Neil Jones

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i know basically what it means. it means that the parity bit of some data somewhere was mismatched but the data was resent or reread and matched. or somthing like that. at the moment my drive now going on 2 years passed with a 94% health test so overall it seems to be stable. my question is can the ecc error be caused by quick removal or forced dismounts of a volume when the drive is powered down or unplugged by surprise



SMART is unreliable at the best of times never mind as part of an external drive.

Here is a webpage that reinforces what I said in the previous post:
http://kb.acronis.com/content/9131
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