Progress and Outlook of HDD Technology - Xiaodong Che
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© 2012 HGST, a Western Digital company Progress and Outlook of HDD Technology Xiaodong (Carl) Che and Roger Wood
description
Xiaodong Che, VP of HGST, gave the talk at CAISS Annual Conference 2012, as part of the panel discussion: Storage Component Technologies - Enable Big Data and Make Better Cloud Computing.
Transcript of Progress and Outlook of HDD Technology - Xiaodong Che
© 2012 HGST, a Western Digital company
Progress and Outlook of HDD
Technology
Xiaodong (Carl) Che and Roger Wood
© 2012 HGST, a Western Digital company 2
Preamplifier
Write-driver
Suspensions
Load/Unload
Ramps
In-hub
spindle motor
& fluid bearing
Disk with
Perpendicular
Recording
Medium
Actuator
Arm-stack
Voice-Coil
Motor
Aluminum base-casting
Connector
(electronics card not shown) (cover not shown)
HDD Structure & Components
© 2012 HGST, a Western Digital company 3
HDD History
1960 Servers &
Mainframes
1980-89 Desktop PCs
Notebook PCs
External HD
DVRs
Digital Audio
Gaming
Digital Photos / Cams
Mobile Phones
Surveillance
HDTVs
Cloud storage
Social media
1990-99 2000-09 2010-19 Beyond…
2020
The Nobel Price in Physics, 2007
© 2012 HGST, a Western Digital company 4
Transformation of HDD
1975
20 GigaBytes
$ 2-4 Million
One
TeraByte
$50
© 2012 HGST, a Western Digital company
Areal Density Historical Trend
0.1
1
10
100
1000
10000
1990 1995 2000 2005 2010 2015
Are
al
Den
sit
y (
Gb
/in
2)
Year product available (Mobile 5400 RPM)
Hitachi/HGST
IBM
Quantum/Seagate
Toshiba
Fujitsu
Samsung
AFC Media
PMR
TFC
MR head
thin film media
PRML channel
GMR heads
MEPRML channel
SMR
MAMR
TAR
BPR
TDMR
60% CGR
90% CGR 30% CGR
45% CGR
20~35% CGR
CPP-GMR
Head TMR
Head
LDPC
channel
4k sector
© 2012 HGST, a Western Digital company 6
Time
Longitudinal Magnetic
Recording (LMR)
1 Tb/in2
10 Tb/in2
Perpendicular Magnetic
Recording (PMR)
Bit Patterned Magnetic Recording (BPMR)
Heat Assisted Magnetic Recording (HAMR)
Microwave Assisted Magnetic Recording (MAMR)
Shingled Write Recording (SWR)
150 Gb/in2
5 Tb/in2
Shingled Write Recording (SWR)
Superpara-magnetic limit
Energy Assisted Recording probably on BPM
Shingled Write & Two Dimensional Magnetic Recording (TDMR)
100 Tb/in2
Are
al
Den
sit
y
Future Technology Roadmap
Y. Shiroishi, Intermag 2009, FA-01
© 2012 HGST, a Western Digital company
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HDD Three Level Technology Enablers
Magnetic Comp.
Elec. systems
Platforms
• Scaling
• HAMR
• MAMR
• BPM/HAMR
• etc…
• adv. LDPC
• SMR
• TDMR
• 4K/Beyond
• etc…
• Multi. Disks
• Thin Z-height
• Helium filled
• DSA
• Hybrid
• Cold Storage
• etc…
© 2012 HGST, a Western Digital company
Key Technology Challenges for HDD
Grow capacity $/GB, GB/Watt, GB/sq ft. etc.
• Areal density – disruptive technologies are coming soon
• Platter count
Reduce unit cost & increase reliability
Increase performance & functionality (e.g., security, power,
acoustics)
New form factors and applications
– Smart devices – ‘thin and light’, instant-on
– Cloud – bigger, slower, $/GB
© 2012 HGST, a Western Digital company
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Thanks!
