On Fri, Jun 21, 2013 at 7:46 PM, Chris Adams <li...@cmadams.net> wrote:
>> To me, it is a bit surprising how the failure of the hard disk can be
>> predicted (and with a time projection)!
>
> One of the lines you listed was the "reallocated sector count".
> Basically, when you buy a 500G drive, it really has more space than
> that.  Some of the sectors are reserved and not reported to the system.
> When the drive detects a bad sector, it relocates it to one of the
> reserved sectors.  Once it has relocated a certain number, it reports
> the drive as failing (possibly because it is out of reserved sectors to
> use).
>
>> I have already done a full backup. Should I wait for some days to
>> check out whether the alarm is true or not?
>
> Given there were a bunch of reallocated sectors, I'd replace it as soon
> as possible and then destroy it.


Thanks, Chris, for your very useful clarification -- I now understand
better the things at issue.

Paul
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