Articles about 3d nand

Hot NAND: Samsung wheels out 30TB SSD monster

Samsung has finally got its 31TB SSD into manufacturing, catching up with Toshiba's similarly well-endowed SAS flash package. The 30.72TB PM1643 effectively replaces the current PM1633a and its 15.36TB capacity limit, and is positioned as an enterprise SSD, although Samsung does tell us it can store 5,700 HD movies. News of …
Chris Mellor, 20 Feb 2018
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Got some fancy new flash in the works, huh Micron? Join the QLC

Later this year Micron plans to release quad-level cell flash drives that encroach on the nearline disk drive market. QLC flash stores 4bits/cell, whereas TLC stores 3, adding a third more capacity. A 6TB TLC SSD could become an 8TB QLC SSD using this technology. QLC flash has a shorter working life than TLC flash and is …
Chris Mellor, 9 Feb 2018
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What do people want? If we're talking mainstream enterprise SATA SSDs, reliability, chirps Micron

Micron is looking to boost its high fidelity cred. The vendor has refreshed its three-model 5100 SATA SSD with a two-variant 5200, increasing reliability from two million to three million hours mean time before failure (MTBF). The 5100 SATA 2.5-inch SSD was built from 32-layer TLC 3D NAND came in three flavours: Eco (high …
Chris Mellor, 23 Jan 2018
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Third NAND dimension makes quad bit bucket cells feasible

Analysis Error-checking code use is so much easier with 3D NAND than previous planar NAND that capacity-lifting quad-level cell technology becomes more feasible. The use of error-checking code (ECC) technology involves adding redundancy to stored data by using an algorithm to work out how many bits to add and use. Block codes work on …
Chris Mellor, 15 Jan 2018

Micron, Intel consciously uncouple 3D NAND development

Micron and Intel have blown their joint 3D NAND project apart but will continue to develop 3D XPoint memory together. Each company will now optimise their 3D NAND technology and products for their individual business needs. However, the two expect no change in their respective future nodes (cell sizes). Scott DeBoer, Micron's …
Chris Mellor, 8 Jan 2018
Mechanic photo via Shutterstock

Toshiba soups up XG5-P NVMe SSD with 2TB and chunky read/write boost

Toshiba has doubled the capacity of its M.2 form factor XG5 flash drive to 2TB with an XG5-P (premium) model. The XG5, announced last May, comes in 256GB, 512GB and 1TB versions, using 64-layer, TLC (3bits/cell) 3D NAND like the XG5-P. There is an SLC (1bit/cell) cache in the XG5 and the same is true for the premium model, …
Chris Mellor, 1 Dec 2017

Another dimension, new galaxy. Intergalactic planar-tary: Join us on our 3D NAND journey

Analysis Part one of my attempt to understand the transition from 2D to 3D NAND started out by trying to understand how 2D NAND is made, so that its development towards 3D NAND can be understood. To recap just a little, a crucial aspect of 2D or planar NAND is that it is made up of bitline strings – individual cells connected in series …
Chris Mellor, 28 Aug 2017

Gather round, kids, and let's try to understand the science of 3D NAND

Backgrounder The world of flash is moving to 3D NAND, chips with 36, 48, 72 or 64 layers of flash cells, and 96-layer chips being prototyped. How has it developed from 2D NAND? To say 2D or planar NAND is a single layer of flash cells is true, as is saying that 3D NAND is layered, but 3D NAND is not actually manufactured from layers of 2D …
Chris Mellor, 25 Aug 2017
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Seagate preps Nytro with layers of flash and boom...

Seagate has updated two single-layer SSD product lines with 3D NAND, raising capacity fourfold in one case, and demonstrating a single 64TB flash drive at the Flash Memory Summit. The Nytro 5000 is the next version of Seagate’s XM1440 SSDs. These came in three versions spanning a high endurance to high capacity range with …
Chris Mellor, 8 Aug 2017
Woman in bathrobe is shocked by something she is reading on her laptop. Pic via Shutterstock

Sweet Christmas: Micron more than triples SSD capacity with 9200

Micron is majorly bigging up its NVMe SSD capacity from 3.2TB in its 9100 to 11TB in a new 9200 drive, and making them shift data a lot faster as well. The 9200 comes in Eco, Pro and Max models, topping out at 11TB in the Eco version. The Eco is read-optimised, the Pro is for mixed read/write use, while the Max is write- …
Chris Mellor, 8 Aug 2017
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Toshiba invests $1.76bn in flash fab production line, WD kinda peeved

Toshiba and Western Digital Corp negotiating makes for bizarre viewing. Billions of dollars are at stake, goodwill is laughably absent and one of the world's best flash production partnerships could be headed down the toilet. Rehash the background here or accept the summary that Tosh needs billions in cash and wants to sell …
Chris Mellor, 3 Aug 2017
Multi-level burger too big to eat. Photo by Shutterstock

Flash fryers have burger problems: You can't keep adding layers

Backgrounder The flash foundry folk took on 3D NAND because it provided an escape hatch from the NAND scaling trap of ever-decreasing cell sizes eventually to non-functioning flash. But 3D NAND, the layering of many 2D planar NAND chip structures, will run into its own problems. These are to do with wafer production time and yield, and …
Chris Mellor, 3 Aug 2017
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Intel launches 64-layer 3D flash client SSD

Intel has hatched a new SSD, a 64-layer one, available in a lovely coincidence at etailer Newegg for $179.99. This is, Intel claims, the world’s first commercially available SSD using 64-layer 3D NAND, and is only shipping with a 512GB capacity. It has a 6Gbit/s SATA interface and its 4K block read/write IOPS are up to 75,000 …
Chris Mellor, 28 Jun 2017
Eyes of a gorila

Poor old Intel. No flash profits for you

Analysis Intel is a formidable competitor in the enterprise and consumer SSD business but it has yet to stop losing money. The key to that looks to be increasing SSD sales volume and making XPoint a success. In its latest quarterly results and among the record quarter news there were these information nuggets: Non-Volatile Memory …
Chris Mellor, 4 May 2017
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72-layer flash die from SK Hynix towers over all, capacity a bit meh

Korean flash fabber SK Hynix has built a 72-layer 3D NAND die with 256Gb capacity. That number of layers, in effect a higher-rise flash chip than anybody else has built, is impressive but the 256Gb capacity is not; Toshiba's 64-layer flash die has a 512Gb capacity. Like the SK Hynix chip, it is a TLC (3bits/cell) device. It …
Chris Mellor, 10 Apr 2017

Kaminario pumps up K2 all-flash array processor speed and SSD capacity

Kaminario has more than doubled array capacity and speed with the sixth generation of its K2 all-flash array, mainly by using higher capacity SSDs and faster controller processors. It's also improved compression and its storage assurance program. A K2 array is composed from one to four K-Blocks, each having two active:active …
Chris Mellor, 8 Feb 2017
NASA's Mike Krainak with the silicon-photonic chip

Second time's a charm? WD tries again with 3D NAND, doubles capacity

WD is firing up an early production run of its 512Gbit 64-layer 3D NAND chip at its Yokkaichi, Japan, foundry, with its partner Toshiba. The silicon uses a triple-level cell (TLC) flash design, which stores three bits per cell. Progressing from this pilot job to mass manufacturing will take at least six months, so don't expect …
Chris Mellor, 6 Feb 2017

You better layer up, Micron's working on next-generation XPoint

Micron is working on two next-generation XPoint products, a new memory, and extending 3D flash beyond 64 layers. At an analysts' day it talked about its 3D NAND technology development. It is shipping its gen-1 3D NAND with 32 layers and 384Gb die capacity and moving towards its second generation with 64 layers and 256Gb …
Chris Mellor, 3 Feb 2017

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