The impact of 3D storage solutions on the next generation of memory systems

Transcription

1 The impact of 3D storage solutions on the next generation of memory systems DevelopEX 2017 Airport City Israel Avi Klein Engineering Fellow, Memory Technology Group Western Digital Corp October 31, Western Digital Corporation or its affiliates. All rights reserved.

2 Outline About Western Digital NAND, NVM and the Memory Taxonomy From 2D to 3D NAND Going Vertical Key attributes of Western Digital s BICS Technology (3D-NAND) Advantage of 3D NAND in various applications Summary 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential. 11/9/2017 2

3 Safe Harbor Disclaimers Forward-Looking Statements This presentation contains forward-looking statements that involve risks and uncertainties, including, but not limited to, statements regarding our market positioning, product development efforts, growth opportunities, business strategy, storage and memory technology, and market trends. Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved, if at all. Forwardlooking statements are subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in or suggested by the forward-looking statements. Additional key risks and uncertainties include: volatility in global economic conditions; actions by competitors; difficulties associated with the integration of SanDisk and HGST into our company; business conditions; growth in our markets; and pricing trends and fluctuations in average selling prices. More information about the other risks and uncertainties that could affect our business are listed in our filings with the Securities and Exchange Commission (the SEC ) and available on the SEC s website at including our most recently filed periodic report, to which your attention is directed. We do not undertake any obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future developments or otherwise, except as otherwise required by law Western Digital Corporation or its affiliates. All rights reserved. 3

4 The Western Digital Family of Brands Delivering the Possibilities of Data to Life 2017 Western Digital Corporation or its affiliates. All rights reserved.

5 Cost Performance The Memory Taxonomy Reg Embed Cache Logic SRAM, edram, STT-MRAM DRAM STT-MRAM Main Memory DRAM, STT-MRAM SCM/Persistent Memory (New) ReRAM, PCM, Storage NAND, HDD, Cold Storage NAND, HDD, Tape

6 Moving Mountains of Data Western Digital Technologies Core Register Core L1 Cache Core L2 Cache Shared L3 Cache DRAM Storage Class Memory Flash HDD Size 64KB 256KB 2-4MB GB 128GB-1TB 512GB-4TB 4-16TB Speed 1ns 3-10ns 10-20ns ns 250-5,000ns 100,000ns- 2,000,000ns 5-10,000,000ns Cost 100x 20-25x 5x 1x 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential. 6

7 Different Tiers of Storage DRAM NOR Flash NAND Flash HDD Bit has own FET Bit has own Contact 128 Bits share Contact Whole disk share one head House with own Airplane &runway Expensive Hotel No Hallway/door Hotel read(sleep) disturb problems Chopper to drop guest 7

8 Cost In NAND We Trust: More than Moore 1Gb, X2-160nm 2Gb, X2-130nm 4Gb, X2-90nm 8Gb, X2-70nm 16Gb, X3-56nm 32Gb, X3-43nm 64Gb, X3-32nm 64Gb, X3 24nm 128Gb, X3 19nm 128Gb, X3 1Ynm 128Gb, X3 1Znm 256Gb, BiCS2 256Gb, BiCS3 256Gb, BiCS Note: Images are not to scale *WDC 2017 Western Digital Corporation or its affiliates. All rights reserved. 8

9 2D NAND Architecture BL BL Contact Floating Gate (memory cell) Source Plate SGD WL SGS NAND String Si-sub 2016 Western Digital Corporation or its affiliates. All rights reserved. 9

10 Counts No Moore: End of Line for 2D NAND Scaling We don t have enough electrons As cells get closer, proximity effect worsens Lithography Process Complexity Quad Pattern Inversion Double Pattern Immersion Threshold Voltage (DeltaVt) 43nm 35nm 24nm 19nm BiCS2 LOWER is better 43nm 35nm 19nm 15nm 1Z Source: WDC estimates 2016 Investor Day Milpitas, CA December 6,

11 Going From Vertical From 2D to 3D BL BL Contact Floating Gate (memory cell) Source Plate SGD WL SGS NAND String Si-sub

12 The BiCS Scaling March 96L 64L 48L 24L BiCS5 BiCS1 BiCS2 BiCS3 BiCS Western Digital Corporation or its affiliates. All rights reserved. 12

13 F : Effective Feature Size NAND Technology Scaling: 2D and 3D Log (Node, nm) 2D NAND, F = Half pitch = 0.5 Cellsize 3D NAND Min Feature size 3D NAND, F= 0.5 Cellsize #layers Time <#>

14 What is BiCS? BiCS: Bit Cost Scalable flash technology (3D NAND) 2D NAND: Floating Gate (FG) Replacing FG with Charge Trap Layer (CTL) Layer stacking w/o adding litho/process steps Effective cell size = lateral cell size / n

15 3D NAND Cell Charge Trap Layer SG Gate Control Gate Poly-Si Body SG 2016 Western Digital Corporation or its affiliates. All rights reserved. 15

16 Proximity Effect Proximity Effect in BiCS Lower is better WL Direction BL Direction 4X nm 3X nm 2X nm 1X nm BiCS 2016 Western Digital Corporation or its affiliates. All rights reserved. 16

17 New opportunities for Scaling in NAND Lateral, Vertical, Logical BiCS4 X4 Technology 96-layer 3D NAND technology Four bits per cell Flash memory 2017 Western Digital Corporation or its affiliates. All rights reserved. 17

18 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential. 11/9/

19 It is all Quite Logical: 4 Bits per Cell 16 data levels per cell Single memory cell Industry-leading 64-layer 3D NAND SSD based on 768Gb X Western Digital Corporation or its affiliates. All rights reserved. 19

20 Industry Leading Portfolio Breadth Client Devices (OEM) Client Solutions (Retail) Data Center Devices Data Center Systems & Platforms Notebook / Desktop HDD NAS HDD Consumer Electronics HDD Client SSD Embedded, Components Branded HDD Branded Flash Removable products Enterprise HDD Enterprise SSD Integrated Object Storage System HDD Platform All Flash Platform 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential.

21 Mobility Markets The mobile platform has evolved to more than handsets data is at the heart of this revolution! Mobile Home Auto Industrial/IoT 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential.

22 Drivers For The Memory Capacity: Smartphone More apps installed Apps are more user friendly than the website. Social Media Facebook WeChat Snapchat Twitter VR/AR Tango VRSE Pokémon Go Orbulus Others Maps Music Video Games 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential.

23 Drivers For The Memory Capacity Increase: Smartphone Photo and Video Creations JPG RAW Raw Image Multi shots Panoramic format 4K HD video Slow motion video 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential.

24 Drivers for More Performance and Better User Experience Consumer Demanded Better User Experience Fast system boot Faster data transfer Launch apps with reduced latency Extended frames of multi-shot Higher frame rate on slow motion video capture Higher resolution burst shots Higher resolution video 4K HD 2017 Western Digital Corporation or its affiliates. All rights reserved. Confidential.

25 3D NAND Summary 3D NAND (BICS) offers: Scalability to high memory capacity Fast Write Performance Long Endurance (TBW) Consume less power per GB written The world s first 64-layer 3D NAND client SSDs are now available, with higher capacities expected in the future. The world s first 3D NAND technology with 96 layers of vertical storage was introduced at Flash Memory Summit 2017.

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