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3D NAND set to dominate SSDs, kill off traditional flash

Lucas Mearian | Dec. 22, 2016
Manufacturers are ramping up production of new 64-layer 3D NAND

Three dimensional NAND (3D NAND) is expected to dominate the solid-state drive (SSD) industry beginning next year, as suppliers reduce their shipments of flash storage based on traditional 2D or planar NAND, according to a new report.

According to DRAMeXchange's latest forecast, NAND flash manufacturers are focusing their efforts on converting fabrication plants to 3D NAND, which is denser, faster and less expensive to produce than traditional 2D NAND.

toshiba 3d nand 100600214 orig  

Toshiba will begin manufacturing new 64-layer 3D NAND flash chips, which have 40% more potential capacity over the previous technology.

DRAMeXchange forecasts that the market supply of 2D NAND flash will begin to fall sharply in the first quarter. By the third quarter of 2017, the share of 2D NAND in the industry's total bit shipments will be under 50%.

"Since the second quarter of 2016, suppliers have sped up their respective 3D NAND development process," Sean Yang, research director of DRAMeXchange, said in a statement. "By the end of this year, 3D NAND is estimated to represent about 30% of the total flash bit shipments."

However, the NAND flash industry's wafer capacity is projected to increase by a marginal annual rate of 6% in 2017. That's because as the pace of the industry-wide transition to 3D NAND architecture accelerates, supply of 2D NAND memory will drop sharply, leading to shortages next year, Yang noted.

Because of the dearth of NAND flash wafers, DRAMeXchange expects prices to rise next year. At the same time, SSD demand worldwide is projected to soar by 60% in 2017 compared to 2016, DRAMeXchange stated, even as many flash memory suppliers are still getting mass production of 3D NAND memory up to speed. Many flash manufacturers are focusing on next-generation, 64-layer 3D NAND.

micron 3d nand   

An example of Micron's 3D NAND chip and gumstick SSD.

"Until the industry in general is able to apply 64-layer 3D NAND solutions to [SSD] storage products, the market supply for 3D NAND memory will remain tight," DRAMeXchange's report stated. "In the meantime, NAND flash prices will continue to go up and boost suppliers' revenues."

For example, Western Digital (WD) has begun manufacturing the third generation of its 3D NAND flash chips, which increases the number of layers from 48 to 64 and will allow it to double capacity.

Pilot production of the new 64-layer chips has already started in WD's Yokkaichi, Japan joint venture fabrication plant. Initial shipments are expected in the fourth quarter of this year with "meaningful commercial volumes" beginning in the first half of 2017.

 

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