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  1. #1
    Player
    Soukyuu's Avatar
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    Mar 2011
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    2,086
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    Crim Soukyuu
    World
    Ragnarok
    Main Class
    Pugilist Lv 50
    Assuming a "read disturb" really occurs if you "read too much" as that quote implies, wouldn't that be a huge flaw of both flash drives and SSDs? It doesn't make sense. If it's really a flaw of this technology, then they must have something to counter it, like a read/write cache.

    Still, a read disturb looks like a form of read error - it doesn't wear out the flash chip itself, only the data on it.

    edit: look at this, slide 19: http://download.micron.com/pdf/prese...ruths_nand.pdf

    Read disturb is handled by ECC - not an issue to the user and does not damage the cells.

    Now, the question is, do flash drives have ECC built in? Cheap ones certainly do not, but I can imagine SSDs and more expensive flash drives having it.

    edit2: those slides are pretty interesting if you want to know more about NAND (flash) memory...
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    Last edited by Soukyuu; 01-30-2012 at 10:47 PM.

    [ AMD Phenom II X4 970BE@4GHz | 12GB DDR3-RAM@CL7 | nVidia GeForce 260GTX OC | Crucial m4 SSD ]

  2. #2
    Player
    Coldfire's Avatar
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    May 2011
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    Gridania
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    1,130
    Character
    Nero Coldfire
    World
    Sargatanas
    Main Class
    Goldsmith Lv 50
    That's what the "ERASE" is for. New SSDs refresh the data on themselves periodically to avoid this error. A flash drive usually doesn't have this feature. Flash drives are supposed to be used as data storage for rarely accessed data and not stuff like operating systems or games.
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