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Earlier quoted context omitted.
Keep in mind, these are layers of cells, not multi-level cells. Each of the layers has an individual multi-level cell. That said, Samsung quad-level cells only have 1k write lifetime, so likely not far off.
I love how someone said there's a septuple-level cell out there... but you have to immerse it in liquid nitrogen for it to work.
At what point will the wear resistance be so low from increasing the layers (and bits) per cell that flash becomes effectively write-once, read many (WORM)?
Increasing layers should cause roughly zero problems. As far as bits per cell, 4 already gives you very slow writes and not a lot of them. Let's say that maxes out at 5 or 6.
Personally I am interested in Cost per Bit reduction. Hopefully there will be news in Flash Memory Summit new week. I wouldn't mind to have a slow 100 write cycle NAND that cost a third of today's price. Think 2TB USB Stick for $49.
[1] https://www.anandtech.com/show/17509/microns-232-layer-nand-...
Earlier quoted context omitted.
Keep in mind, these are layers of cells, not multi-level cells. Each of the layers has an individual multi-level cell. That said, Samsung quad-level cells only have 1k write lifetime, so likely not far off.
Remember, even 1000 writes means roughly 3Y of full drive writes per day with the naïve wear leveling and the most brutal write load. For most write loads the drives made of this kind of NAND can be easily warranted for 3Y.
At what point will the wear resistance be so low from increasing the layers (and bits) per cell that flash becomes effectively write-once, read many (WORM)?
Keep in mind, these are layers of cells, not multi-level cells. Each of the layers has an individual multi-level cell. That said, Samsung quad-level cells only have 1k write lifetime, so likely not far off.
SSD prices have stalled for quite a while. By now they should be getting in shouting distance of hard drives but unfortunately memory makers are much more of a colluding trust than Hard Drive manufacturers.
What I really want is a high-lifetime write medium to go with SSDs. Hard disks aren't really it. It's too bad the DVD/CD form factor/drive died with high speed internet, holographic storage would have been great. But there was no investment/demand to push it.
Earlier quoted context omitted.
Remember, even 1000 writes means roughly 3Y of full drive writes per day with the naïve wear leveling and the most brutal write load. For most write loads the drives made of this kind of NAND can be easily warranted for 3Y.
1k writes sounds good enough for consumer hardware I suppose. As long as there's some some type of S.M.A.R.T. system to warn the user before it wears out.
A much better article on Anandtech [1]. Dual Stack 116 Layers. And as noted inside the article 100+ layer per stack isn't exactly new. Personally I am interested in Cost per Bit reduction. Hopefully there will be news in Flash Memory Summit new week. I wouldn't mind to have a slow 100 write cycle NAND that cost a third of today's price. Think 2TB USB Stick for $49. [1] https://www.anandtech.com/show/17509/microns-232…
Earlier quoted context omitted.
Increasing layers should cause roughly zero problems. As far as bits per cell, 4 already gives you very slow writes and not a lot of them. Let's say that maxes out at 5 or 6.
Thermals? SSDs have slowly but surely increased in TDP.
And if your main goal is capacity you could decide to just not run it faster, which will avoid basically all the extra heat.
A much better article on Anandtech [1]. Dual Stack 116 Layers. And as noted inside the article 100+ layer per stack isn't exactly new. Personally I am interested in Cost per Bit reduction. Hopefully there will be news in Flash Memory Summit new week. I wouldn't mind to have a slow 100 write cycle NAND that cost a third of today's price. Think 2TB USB Stick for $49. [1] https://www.anandtech.com/show/17509/microns-232…
I would love that. I doubt that's what they're doing, but I would love that.