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Toshiba plans to make a 100TB QLC SSD O.O

Enrico411
  • 45 months ago

Facebook asked for denser and cheaper 100TB QLC NAND SSDs during its keynote address at the Flash Memory Summit. Coincidentally, an hour later, Toshiba laid out its ambitious plans to develop 100TB QLC SSDs. Toshiba plans to pioneer the use of QLC (Quad-Level Cell) technology with a new variant of its 64-layer BiCS3 NAND, but the company will also employ its TSV (Through-Silicon Via) technology to boost its die stacking capability, which effectively doubles capacity per package. QLC NAND makes several tradeoffs, particularly in the endurance and performance department, but it will provide more density than even the beefiest new SSDs.

More here: http://www.tomshardware.com/news/qlc-nand-ssd-toshiba-facebook,32451.html

Comments

  • 45 months ago
  • 1 point

QLC? How will this stack up against TLC, MLC, and SLC reliability-wise? I know as far as reliability goes, SLC > MLC > TLC, but will it be TLC > QLC or not? Also curious to know how this stacks up against Intel and Micron's new 3D XPoint technology.

  • 45 months ago
  • 1 point

The endurance on QLC SSDs will be ****, end of story, I think that the estimate is that they have 100 writes per cell and that's it

  • 45 months ago
  • 1 point

Still 10+ petabytes though. Not great, but still isn't anything to scoff at, especially since NAND seems to be heavily underrated when you are talking about endurance, Tech report's torture test for example.

  • 45 months ago
  • 3 points

True, but when you are talking about such expensive storage, you want it to be as reliable as possible, especially with 100TB of data on it. The only thing about that tech report torture test is that they didn't do any long term tests for how the wear on the drive affects the ability to store data.

  • 45 months ago
  • 2 points

Good point. I have no idea if re-allocating sectors affects the ability for long term data storage, which is crucial, given the target demographic and usage for this technology.

  • 45 months ago
  • 1 point

I'd guess when it starts to have to reallocate sectors it will result in a slower read speed for that particular piece of data as it is spread all over the stack of NAND. The real problem is that you have 16 different voltage values per cell to get QLC vs 8 for TLC, so you may have other issues if there is a slight bit of wear and power loss as you might well have slight changes in the voltage in the cell and get a 0 where there should have been a 1

  • 45 months ago
  • 1 point

Priorities: Reliability >>>>>> Speed = Storage

[comment deleted by staff]
  • 45 months ago
  • 1 point

1 PB drives that probably cost a ton :/

  • 45 months ago
  • 1 point

Still completes the banner.

  • 45 months ago
  • 1 point

Cost one ton of what? Copper? Silver? Gold? Platinum? Titanium? Diamond?

  • 45 months ago
  • 1 point

1 tonne of iridium

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