Western Digital Aims For 100TB Hard Drives by 2030

Western Digital plans to introduce its first heat-assisted magnetic recording (HAMR) drives in late 2026, with 36TB conventional magnetic recording (CMR) and 44TB shingled UltraSMR variants. Volume production won't begin until the first half of 2027, following qualification by cloud data center providers in late 2026. The company projects that HAMR technology, combined with OptiNAND, increased platter count, and mechanical improvements, will enable drives reaching 80TB CMR and 100TB UltraSMR capacities around 2030 -- a departure from Western Digital's previous commitment to microwave-assisted magnetic recording (MAMR) in 2017, which evolved into the energy-assisted perpendicular magnetic recording (ePMR) technology used in current drives.

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