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Thread: Can the NAND "wear out"?

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    Can the NAND "wear out"?

    Hello to all,

    Sinyk, in his Triiforce guide to running WiiWare and VC games from an sd card, claims,

    "I have read that repetitive writing to the NAND will cause bad blocks in the NAND memory and eventually wear out your Wii, but running an emulated NAND carries none of those risks."

    Is this really true? I mean, flash memory is flash memory, is it not? Does it "wear out"? Seems to me that Nintendo writes directly to the NAND to install VC/WiiWare, also...

    Honestly, keeping everything in WAD format seems MUCH more convenient, but only if perpetually installing/uninstalling is OK.

    Any low-level hardware guys have any thoughts on this? Sorry, I'm a C++/Java programmer, so I don't get too into low-level writes.

    Chad

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    Member siphilips's Avatar
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    Nope it will not wear out, in theory never because thereare no mechanical parts but it probably will at some point though, not for a very long time, so don't worry.

    I think someone like Samsung make the NAND memory so it will be extremely durable.

    Also NAND memory is you look carefully is starting to appear in the like of top end video cameras as well so they are giving HDD video cameras and DVD recorders a run for their money too.

    Wiki on NAND

    Flash memory is a non-volatile computer storage that can be electrically erased and reprogrammed. It is a technology that is primarily used in memory cards and USB flash drives for general storage and transfer of data between computers and other digital products. It is a specific type of EEPROM (Electrically Erasable Programmable Read-Only Memory) that is erased and programmed in large blocks; in early flash the entire chip had to be erased at once. Flash memory costs far less than byte-programmable EEPROM and therefore has become the dominant technology wherever a significant amount of non-volatile, solid state storage is needed. Example applications include PDAs (personal digital assistants), laptop computers, digital audio players, digital cameras and mobile phones. It has also gained popularity in console video game hardware, where it is often used instead of EEPROMs or battery-powered static RAM (SRAM) for game save data.

    Since flash memory is non-volatile, no power is needed to maintain the information stored in the chip. In addition, flash memory offers fast read access times (although not as fast as volatile DRAM memory used for main memory in PCs) and better kinetic shock resistance than hard disks. These characteristics explain the popularity of flash memory in portable devices. Another feature of flash memory is that when packaged in a "memory card," it is enormously durable, being able to withstand intense pressure, extremes of temperature, and even immersion in water.[citation needed]

    Although technically a type of EEPROM, the term "EEPROM" is generally used to refer specifically to non-flash EEPROM which is erasable in small blocks, typically bytes. Because erase cycles are slow, the large block sizes used in flash memory erasing give it a significant speed advantage over old-style EEPROM when writing large amounts of data.

    Anarak corner

    Flash memory (both NOR and NAND types) was invented by Dr. Fujio Masuoka while working for Toshiba circa 1980.[1][2] According to Toshiba, the name "flash" was suggested by Dr. Masuoka's colleague, Mr. Shoji Ariizumi, because the erasure process of the memory contents reminded him of the flash of a camera. Dr. Masuoka presented the invention at the IEEE 1984 International Electron Devices Meeting (IEDM) held in San Francisco, California.
    Last edited by siphilips; 12-03-2009 at 04:17 PM.
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    New Member HEROXOOT's Avatar
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    Bad blocks are usually caused by homebrew channels. Infact, i didnt have any untill I installed Neogamma as a channel. But programs that take its space will overwrite it. On the NAND backups you see it because its showing the LOWEST levels of your nand.

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    Does this mean that it is safe to backup all my wiiware games to the sd and load them from there? I was wondering because everytime I load one form the SD it seems to nee dto reinstall it to the Wii, and I was curious to know if this is damaging to the Wii's memory. Is it ok to install an abundance of Wiiware titles and move them all to an external SD card to load them, is this worse than loading from the Wii Memory?

    Thanks.

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    Nevermind I'm going to go ahead and try to install the Triforce NAND emulator in order to install more games faster on my Wii. The install form SD is a little tedious and the possibility of it damaging or wearing out my Wii makes me cautious. For anyone looking at this thread and wondering what a good step would be to do follow this link to the Triforce readme http://www.wiihacks.com/recommended-...s-sd-card.html

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    Most memory like that contained in a Wii should be able to be written to 100,000 times before it would become unusable.

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    Answered and locked

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