All eMMC/SD CARD build with eMMC/SD card controller and NAND chip SLC NAND will have 100000/cell erase life .MLC NAND will have 10000/cell
eMMC chip will have HW12bit/1024Byte ECC ,and almost chip will have wear leave in the eMMC controller firmware If you have 16GB eMMC . you can write total 16GBx10000 almost 160TB 2014-02-25 3:35 GMT+08:00 rh_ <[email protected]>: > On Mon, 24 Feb 2014 08:52:30 -0800 (PST) > Carl-Fredrik Sundström > <[email protected]> wrote: > > > > > > > I know there are many threads about emmc life and how to extend it. > > What I would like to know is how big an issue it is ? > > My Samsung phone is 2 years old now and its being heavily used, it > > runs Android which is a linux flavor and so far I haven't > > had any issues. I actually haven't even heard about the emmc wearing > > out in phones? > > > > Do you have an SD card? Most writing takes place there. But a certain > amount occurs on the emmc. But from what little I know emmc wear > shows up over time as diminished capacity. Whether or not the phone > reports diminished capacity is another question. Consumer products > typically undergo rigorous design review and testing. Because > they rely on economies of scale to find profit they have to > minimize tech support calls or profits plummet. I'm saying that > it would be unwise to put a emmc part in that wears out before > the useful lifetime of the product. Of course we know that useful > lifetime's in the eye of the beholder. It's easier to place a reliable > part then to have a class-action lawsuit because 2 million of > your devices failed in a 3-month period. > > > > Has anyone experienced that the emmc has worn out ? > > > It's a good question and you mean this question in a general sense > or specific to BBB? As far as I know I've not experienced a emmc > to wear out. If you look at the specs the lifetimes are high if I recall. > > > > > If it wore out was the device having unusual I/O patterns or heavy > > logging? > > I think heavy io == heavy wear, writing is the burden. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
