This document discusses using a hybrid NAND configuration in SSDs to push down prices while maintaining performance and reliability. It begins by reviewing SSD performance metrics and how price has been the key driver of market expansion. It then introduces the concept of a hybrid NAND SSD that combines multiple NAND types like SLC, MLC, and TLC. This flexible design can address different market needs by optimizing for performance, endurance, or price depending on the application. Testing results show hybrid NAND SSDs can achieve SLC-like speeds at an MLC-like price point. Overall, a smart controller that dynamically manages data placement across NAND types allows hybrid SSDs to expand the market by creating new affordable segments without trading

1. SSD with Hybrid NAND Smart Controller pushing price barrier Bob Chang / NOVACHIPS bobchang@novachips.com Flash Memory Summit 2011 Santa Clara, CA

7. DRAM SSD Simulation Test Method: Launch an application to cache it in the dram and then exit & re-launch to measure the application launch time.

10. High Price and Performance

11. Built-in ECC & Signal Processing

12. Less burden for controllers

13. Improved Reliability

14. Improved Endurance

15. High Speed Interface

16. Small Premium Price

17. Consumer NAND

18. Mass Market

19. Less Reliability

21. SATA 3,128GB SSDs are tested. One with 25nm Synch NAND and the other with 34nm Asynch NAND.

23. SATA 3,128GB SSDs are tested. One with 25nm Synch NAND and the other with 34nm Asynch NAND.

25. SATA 3,128GB SSDs are tested. One with 25nm Synch NAND and the other with 34nm Asynch NAND.

27. SATA 3,128GB SSDs are tested. One with 25nm Synch NAND and the other with 34nm Asynch NAND.

29. New Segments with Hybrid NAND Increasing Performance, Reliability & Price Mainstream SSDs SLC like Performance TLC like Price Hybrid

30. Reliability and Product LifeImprovement with Hybrid NAND TLC MLC SLC Acceptable Error Rate for Client Application Probability of Bit Error (After ECC) Read Cycle P/E Cycle

31. Reliability and Product LifeImprovement with Hybrid NAND Advanced adaptive algorithm to filter ‘frequently ’ & ‘Infrequently’ accessed data to enable Hybrid NAND configuration HOT COLD TLC MLC SLC Acceptable Error Rate for Client Application Probability of Bit Error (After ECC) Read Cycle P/E Cycle

32. Reliability and Product LifeImprovement with Hybrid NAND MLC SLC Probability of Bit Error (After ECC) Read Cycle P/E Cycle

33. Reliability and Product LifeImprovement with Hybrid NAND MLC SLC+MLC SLC Probability of Bit Error (After ECC) Read Cycle P/E Cycle

34. Reliability and Product LifeImprovement with Hybrid NAND MLC SLC+MLC SLC Increase Useful Life Probability of Bit Error (After ECC) Read Cycle P/E Cycle

35. Reliability and Product LifeImprovement with Hybrid NAND MLC SLC+MLC SLC Increase Useful Life Probability of Bit Error (After ECC) Increase Data Integrity Read Cycle P/E Cycle

36. Reliability and Product LifeImprovement with Hybrid NAND TLC SLC Probability of Bit Error (After ECC) Read Cycle P/E Cycle

37. Reliability and Product LifeImprovement with Hybrid NAND TLC SLC+TLC SLC Probability of Bit Error (After ECC) Read Cycle P/E Cycle

38. Reliability and Product LifeImprovement with Hybrid NAND TLC SLC+TLC SLC Increase Useful Life Probability of Bit Error (After ECC) Read Cycle P/E Cycle

39. Reliability and Product LifeImprovement with Hybrid NAND TLC SLC+TLC SLC Increase Useful Life Probability of Bit Error (After ECC) Increase Data Integrity Read Cycle P/E Cycle

40. New Segments with Hybrid NAND Increasing Performance, Reliability & Price Hybrid NAND SSD Flexible Configuration For Market NEEDS Hybrid

41. New Segments with Hybrid NAND Increasing Performance, Reliability & Price Smart SSD Controller can flexibly configure various NANDs from today’s market Not only it can expand the market by pushing the price barrier but also create new market segments according to various market needs Hybrid NAND SSD Flexible Configuration For Market NEEDS Hybrid

42. Thank you For Any Questions; Please contact Bob Chang / NOVACHIPS Co., Ltd. Email: bobchang@novachips.com Legal Disclaimer All other trademarks are property of their respective owners. Information in this slide is subject to change without notice. NOVACHIPS is not responsible for omissions or errors in typography or photography of this document. www.novachips.com