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John Rydning

Research Vice President, Hard Disk Drives and Semiconductors

John Rydning is IDC's research vice president for hard disk drives, responsible for providing insight and market data for the worldwide HDD market. Mr. Rydning's research coverage includes all market applications for hard disk drives, as well as assessing the demand for key HDD components. Additionally, Mr. Rydning's research includes analyzing hard disk drive technology trends, and technology trends for competing storage technologies to hard disk drives, and the market opportunity for all forms of storage technologies across all markets worldwide.


Mr. Rydning has more than 30 years of hard disk drive industry experience, including more than 20 years working within the industry. Previously, John spent 18 years with one of the leading HDD component suppliers, and prior to that with a small HDD contract manufacturing company. His background enables him to provide clients with deep insights into underlying HDD technology trends, HDD market dynamics, and industry dynamics.


  • Bachelors of science degree from the Carlson School of Management at the University of Minnesota
  • Frequent speaker, presenter, and moderator at storage industry conferences
  • In 2010, Mr. Rydning was recipient of one of IDC's most prestigious research awards for his professional excellence in market research


Western Digital Announces a Breakthrough HDD Technology

Oct 2017 - IDC Link - Doc # lcUS43156317

by: John Rydning

Western Digital (WD) announced a technical breakthrough innovation for microwave assisted magnetic recording (MAMR) technology for hard disk drives (HDDs). WD also announced plans to commercialize MAMR technology in HDD products in volume b...
This IDC Pivot Table provides a summary of worldwide hard disk drive (HDD) component quarterly demand for 1Q18 and a four-quarter demand outlook. This Pivot Table provides insight into the demand for select HDD components by HDD form factor...
Worldwide Hard Disk Drive Forecast, 2018–2022

May 2018 - Market Forecast - Doc # US43766218

by: John Rydning

This IDC study presents a five-year forecast for the worldwide hard disk drive market."HDD industry revenue will decline at a much slower rate than HDD unit shipments because of the ongoing shift in the mix of HDD shipments, with the enterp...
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