Scaling the Areal Density Mountain. Dave Anderson Seagate
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1 Scaling the Areal Density Mountain Dave Anderson Seagate
2 Technology Progression - ASTC
3 Challenges to Higher Capacity Drives Rdr2 100 nm Rdr1 Thermal Stability Writer/Reader/HMS Scalability Fixed Form Factor 3
4 Innovative Technologies PMR/CMR He SMR TDMR HAMR HDMR Perpendicular AD Up to ~1.0 Tb/in 2 Current Mainstream Products Helium Filled Hard Drives Currently Shipping Shingled Shipping in various markets 2D Product Integration Heat Assisted AD ~1.2 to 4.0 Tb/in 2 Product Integration Heated Dot ~5.0 to 10.0 Tb/in 2 AD Initial Product Integration >2025
5 Innovative Technologies PMR/CMR He SMR TDMR HAMR HDMR Perpendicular AD Up to ~1.0 Tb/in 2 Current Mainstream Products Helium Filled Hard Drives Currently Shipping Shingled Ramping 2D Product Integration Heat Assisted AD ~1.2 to 4.0 Tb/in 2 Product Integration Heated Dot ~5.0 to 10.0 Tb/in 2 AD Initial Product Integration >2025
6 Two Dimensional (TDMR) Problem Reducing the reader width difficult Reader sees more of adjacent tracks = noise TDMR solution Read adjacent tracks Calculate interference effects and cancel out noise Longer term knowledge of adjacent tracks & clever encoding extend the areal density further by writing tracks closer and closer together Challenge: How to implement TDMR Reading multiple tracks with a single reader is too slow Multiple readers on a single head has engineering challenges 6
7 2D Works TDMR 2D Compatible with PMR, SMR and HAMR Product Integration Takeaways 2 or more readers on the same track or partially on adjacent tracks Current areal density gains in the 5-10% range Future work to get larger areal density gains Also get 2x read data rate
8 Innovative Technologies PMR/CMR He SMR TDMR HAMR HDMR Perpendicular AD Up to ~1.0 Tb/in 2 Current Mainstream Products Helium Filled Hard Drives Currently Shipping Shingled Ramping 2D Product Integration Heat Assisted AD ~1.2 to 4.0 Tb/in 2 Product Integration Heated Dot ~5.0 to 10.0 Tb/in 2 AD Initial Product Integration >2025
9 Heat Assisted Making Significant Progress HAMR Heat Assisted AD ~1.2 to 4.0 Tb/in 2 Product Integration HAMR Integrated Head Laser Diode HAMR NFT Very stable media to extend areal density Media is heated so it can be written. Laser is integrated into the HAMR head Near field optics allow very narrow and sharp bits to be written. Heated, written and cooled in less than a nano-second. Takeaways HAMR need for increase in areal density. Significant progress made, still focusing on reliability and area density.
10 HAMR ADC Growth and Product readiness- It Works! Accomplishments: ADC = +1.6 Tb/in 2 Reliability Integrated heads/drive Integrated NFT heads ADC demo: Gfpsi =1975kfci x 510 ktpi ADC Demo Gfpsi =2084kfci x 673 ktpi
11 Innovative Technologies PMR/CMR He SMR TDMR HAMR HDMR Perpendicular AD Up to ~1.0 Tb/in 2 Current Mainstream Products Helium Filled Hard Drives Currently Shipping Shingled Shipping in various markets 2D Product Integration Heat Assisted AD ~1.2 to 4.0 Tb/in 2 Product Integration Heated Dot ~5.0 to 10.0 Tb/in 2 AD Initial Product Integration >2025
12 Heated Dot = BPM + HAMR Continuous FePt film 1Tdpsi to 5Tdpsi HDMR Heated Dot ~5.0 to 10.0 Tb/in 2 AD Initial Product Integration >2025 BER = 1Tb/in2 Takeaways Spinstand testing and drive integration BPM:Multiple grains per bit to a single magnetic island per bit Demonstrated 1.5 Tdpsi Spinstand HDMR at 5Tdpsi and beyond looks feasible 5 T
13 WHY HARD DISK DRIVES REMAIN ESSENTIAL
14 2005: Installation Pope Benedict
15 2013: Installation Pope Francis 2005: Installation Pope Benedict
16
17 Move Toward Mobility: Shifting the Location of Data % of the storage was shipped into the client market 2020 dramatic shift to the cloud 2020 HDD Shipments: ZB 77 Exabytes 1,121 Exabytes Source: Seagate Strategic Marketing and Research 17
18 No Replacement for HDD Soon HDDs dominate the storage market HDD Shipments: ZB Exabytes EBs NAND 2020 Forecasts: < ¼ (HDD EBs) CY08 CY09 CY10 CY11 CY12 CY13 CY14 CY15 CY IBS Forward Insights Gartner HDD NAND 18
19 THANK YOU
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