I think this is the most accurate observation. Still, I would love to be able to source the community for a larger data set. Perhaps we could build a small and simple application that anonymously "pings" our web service with the cards CID register. While we have no way of tracing individual failures we could check the median lifetime of the cards we get to see. Or that we'll see a ton of zeros/FFs. I wonder if an android app (lots of users) would make sense here. How common are SD cards in the phones you use?
For CID specification refer to http://www.flashgenie.net/img/productmanualsdcardv2.2final.pdf section 3.5.2 Wysłane z iPhone'a Dnia 8 maj 2012 o godz. 15:30 Riku Voipio <riku.voi...@linaro.org> napisał(a): > Hi, > > I think following any SD card brand for quality is a losing > proposition. Every brand sources chips wherever they cheapest get, and > thus what is inside the package changes from one batch to another. > Everyone has anecdotal evidence of one brands memory cards failing > more often than another, but nobody has solid statistics... > > Riku > > On 8 May 2012 14:26, Kurt Taylor <kurt.tay...@linaro.org> wrote: >> Very interesting. I have had 2 sandisks fail and only one kingston fail. The >> only one that has never given me any trouble is a patriot. >> >> >> On 8 May 2012 04:09, James Tunnicliffe <james.tunnicli...@linaro.org> wrote: >>> >>> https://wiki.linaro.org/WorkingGroups/Kernel/Projects/FlashCardSurvey >>> is being kept up to date, but at a glance has no reliability comments. >>> I have 4 Transcend class 10 32GB cards that rocket along, but one has >>> stopped letting me write images to it with linaro-media-create, so >>> full marks for speed, but not for reliability. >>> >>> James >>> >>> On 8 May 2012 08:06, Dave Pigott <dave.pig...@linaro.org> wrote: >>>> Yep, we predominantly use SanDisk and avoid Kingston. >>>> >>>> Dave Pigott >>>> Validation Engineer >>>> T: +44 1223 45 00 24 | M +44 7940 45 93 44 >>>> Linaro.org │ Open source software for ARM SoCs >>>> Follow Linaro: Facebook | Twitter | Blog >>>> >>>> On 8 May 2012, at 06:55, Paul Larson wrote: >>>> >>>> In the lab, we use the sandisk extreme cards iirc. What I hear from >>>> others >>>> and see personally is that most class 10 cards seem to work ok, but >>>> kingston >>>> are generally avoided. >>>> >>>> On Mon, May 7, 2012 at 7:15 PM, Michael Hudson-Doyle >>>> <michael.hud...@linaro.org> wrote: >>>>> >>>>> Hi, >>>>> >>>>> The SD card I routinely use for testing which I got at some Linaro >>>>> meeting or other has fallen apart (physically), so I'm on the hunt for >>>>> a >>>>> new one. Does anyone have a recommendation of a brand of card I should >>>>> be looking for? For LAVA stuff, it needs to be at least 8 gigs. >>>>> >>>>> Cheers, >>>>> mwh >>>>> >>>>> _______________________________________________ >>>>> linaro-dev mailing list >>>>> linaro-dev@lists.linaro.org >>>>> http://lists.linaro.org/mailman/listinfo/linaro-dev >>>> >>>> >>>> _______________________________________________ >>>> linaro-dev mailing list >>>> linaro-dev@lists.linaro.org >>>> http://lists.linaro.org/mailman/listinfo/linaro-dev >>>> >>>> >>>> >>>> _______________________________________________ >>>> linaro-dev mailing list >>>> linaro-dev@lists.linaro.org >>>> http://lists.linaro.org/mailman/listinfo/linaro-dev >>>> >>> >>> >>> >>> -- >>> James Tunnicliffe >>> >>> _______________________________________________ >>> linaro-dev mailing list >>> linaro-dev@lists.linaro.org >>> http://lists.linaro.org/mailman/listinfo/linaro-dev >> >> >> >> >> -- >> >> Kurt Taylor (irc krtaylor) >> Linaro Multimedia >> >> Linaro.org │ Open source software for ARM SoCs >> Follow Linaro: Facebook | Twitter | Blog >> >> >> _______________________________________________ >> linaro-dev mailing list >> linaro-dev@lists.linaro.org >> http://lists.linaro.org/mailman/listinfo/linaro-dev >> > > _______________________________________________ > linaro-dev mailing list > linaro-dev@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-dev _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
