ePMR


The Future of HDDs Begins Now

The Future of HDDs Begins Now

Today marks a new milestone for Western Digital – with our company separation now complete, we are once again fully focused on our pioneering hard disk drive (HDD) business. Our rich history of delivering top-notch HDD innovation has defined us for decades, and I am excited for us to further deepen our commitment to delivering […]

February 22, 2025 • 4 min read Technology

Explained: HDD Areal Density

Explained: HDD Areal Density

Have you ever wondered how hard drives manage to store vast amounts of data in such a small space? In part, this is made possible by areal density—the driving factor in HDD capacity.   This is areal density, explained.  What is areal density? Areal density is the amount of data that can be stored per square […]

October 10, 2023 • 3 min read Technology

The Magnetic Attraction of ePMR

The Magnetic Attraction of ePMR

In conducting research and development toward other energy-assisted magnetic recording (EAMR) technologies, Western Digital engineers discovered a way to significantly increase HDD capacity using ePMR, or energy-assisted perpendicular magnetic recording.

August 19, 2021 • 7 min read Products