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Dual Layer Recording Could Enable 120+TB Hard Disk Drives

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Seagate News

4Tbpsi,30TB+ Hdds,HAMR

I am the President of Coughlin Associates and a storage analyst and consultant. I have over 40 years in the data storage industry with multiple engineering and management positions. I have many publications and six patents to my credit.

authors from Seagate, NIMS and Tohoku University demonstrated two-layer heat assisted magnetic recording. The research team combined experimental measurements as well as modeling to show that this approach to magnetic recording could accomplish up to 4Tbpsi areal density. Current heat assisted magnetic recording products from Seagate achieve about 1.5Tbsi recording to enable 30TB+ HDDs.

Magnetic recording roadmaps from the Advanced Storage Research Consortium have projected advancing HDD areal density using energy assisted magnetic recording and also by decreasing magnetic media grain size and going to technology such as bit patterned media which defines separate islands of magnetic media. Magnetic grain size can only decrease so far.

 

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