Re: Limited life of flash memory

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On Tue, 2008-12-02 at 09:29 -0700, ext Mark wrote:
> On Tue, Dec 2, 2008 at 9:16 AM, Igor Stoppa <igor.stoppa@xxxxxxxxx> wrote:
> >
> > I would recommend you to do some reading about jffs2, ubifs and wear
> > levelling in general.
> >
> > Then you'll understand better what people are trying to tell you.
> > --
> >
> > Cheers, Igor
> >
> 
> The problem is that I *do* understand wear levelling. Just as some
> people think that simply having anti-virus software is a 100%
> guarantee that they can never get a virus, you seem to think that wear
> levelling is 100% protection against all possibility of flash failure.
> That is *obviously* not the case. There are all kinds of problems that
> can occur that are not related to repeated write operations. Even the
> most sophisticated error-correction can't protect you from a defect in
> the error correction itself. Memory of *any* kind is far more complex
> than just bits on a chip.
> 
> How do you explain the fact that flash memory *does* fail? There have
> been posts on this very list about such failures.

I can only repeat my advice: why don't you do some reading at least
about jffs2?

-- 

Cheers, Igor

---

Igor Stoppa
Maemo Software - Nokia Devices R&D - Helsinki
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