Re: Some very basic questions

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On Wed, 2008-10-22 at 14:27 +0200, Stephan von Krawczynski wrote:
> On Tue, 21 Oct 2008 13:31:37 -0400
> Ric Wheeler <ricwheeler@xxxxxxxxx> wrote:
> 
> > [...]
> > If you have remapped a big chunk of the sectors (say more than 10%), you 
> > should grab the data off the disk asap and replace it. Worry less about 
> > errors during read, writes indicate more serious errors.
> 
> Ok, now for the bad news: money is invented.
> If you replace a disk before real failure you won't get replacement from the
> manufacturer. That may sound irrelevant to someone handling 5 disks, but is
> significant if handling 500 or more. The replacement rate is indeed much
> higher than people think from their home pcs.

Hardware vendors already do replace disks based on policies defined by
their own array hardware.  These are already predictive.

-chris




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