Japanese researchers showcase hybrid SSD using NAND and ReRAM

By Shawn Knight · 18 replies
Jun 19, 2012
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  1. The technology inside that new solid state drive you just purchased could be obsolete sooner than you think. A group of Japanese researchers have developed a hybrid SSD that uses high-capacity NAND flash memory alongside Resistive Random Access Memory, or…

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  2. cliffordcooley

    cliffordcooley TS Guardian Fighter Posts: 9,728   +3,701

    Nice!!! :)

    Up to 11 times 6Gb/s, am I doing this right? That would be over 60Gb/s.

    Definitely need a new storage standard for this tech. With each SATA standard doubling in speed, we are looking SATA7. Why would we even bother doubling transfer rates for SATA4, SATA5, and SATA6? Even with SATA Express you would need 8 lanes to achieve 60Gb/s.
  3. No, you're not doing it right.
    Write performance is just 46Mb/s, which is 11x the speed of conventional SSD hard drives.
    One thing is theoretical transfer speed and other thing is real write speed...
  4. cliffordcooley

    cliffordcooley TS Guardian Fighter Posts: 9,728   +3,701

    I know I don't want any of your SSD's, 46 megabits or 46 megabytes is slow for an SSD. SATA 3.0 (6Gb/s) would translate closer to 600MB/s (megabytes). A standard HDD could transfer 100MB/s.
  5. ElShotte

    ElShotte TS Booster Posts: 163

    A damn good HDD could transfer 100 megabytes a second, most of them get only 70-80. But yeah, your math seems correct. Today's fastest SSDs have Maximum R/W speeds of let's call it, 550 megabytes p/s, that times 11 would be roughly 5.9 gigabytes a second, which is in fact 47.26 gigabits per second.....
  6. ElShotte

    ElShotte TS Booster Posts: 163

    The reason I wrote out megabytes, gigabytes and gigabits is because a lot of people get them all confused.

    1 GB (Gigabyte) = 8 Gb (Gigabits). 1 GB = 1024 megabytes. If I'm not mistaken, GB are used when measuring size, and Gb are used when measuring bandwidth.
  7. ElShotte

    ElShotte TS Booster Posts: 163

    There's no edit button on replies? Really?
  8. You can edit your post by looking for it in the forum.
  9. ElShotte

    ElShotte TS Booster Posts: 163

    Ok sweet. No "Delete" button though, so no point in consolidating all my replies into 1 if I can't delete it anyway.
  10. Someone said bigabites are used for size and bigabits are used for speed. Can you also use gigabytes per second or gigabits per second. Is ether still valid. Also the same is true for size you can have gigabits or gigabytes. hehehe confused yet.
  11. Technically if you are using base 2 (e.g. 1024), then it's Gib, GiB... Gb and GB are base 10.
  12. Jibberish18

    Jibberish18 TS Evangelist Posts: 646   +89

    That chart is AWESOME.
  13. Now, didn't they make some similar claims about SSDs long before they arrived on the scene? I recall something about ten to twenty year lifespans. As we've discovered, that was bull. I kinda expect this to go the same way. If we're LUCKY we might start seeing five years warranties.

    If this new tech will actually have a 20 year warranty, then I'll be first in line.
  14. I wonder what primary school is this "research" from. "MRU" Algorithm, my God! This revolutionary approach was called "smartdrive" in DOS some 25 years ago, and now is an integral part of any operating system, it's called "disk caching".
  15. Per module, and there are several.
  16. Not quite.
    6Gb/s is the potential transfer speed of the Data Bus, not the read/write speed of the drive. Most SSDs struggle to utilize the 3Gb/s offered by SATA II. 3Gb/s is GigaBits, not GigaBytes (though we may all wish it was bytes instead of bits). There are 8 Bits in a Byte, so 3Gb/s is actually a data transfer rate around 384 MegaBytes a second (going by pure theoretical limits and math - the rate in reality is usually lower due to system bottle necks). Up to 11x faster would be around 33 GigaBits a second. Again, by pure theoretical work, and that is just the speed the bus would be able to produce (bottle necks and all) in order to make full use of the drive speed - the actual Bus it would be one would probably be operating at a minimum of 48Gb/s (going by the observance that Moore's Law also applies to data bus speed growths, doubling each generation, with each generation being about two years apart)
    So, still very fast, faster than most consumer computer can even process data. I'm predicting we're still 10 years off, and will probably have to see electrical data transfers (in-system) replaced with an optical system of some form.
  17. No, that's all wrong. I don't know where you got this rubbish.
  18. think it's time to add builtin fiber connections!!

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