21CTO

Feb 26, 2024 · Fundamentals

Can 200 TB Optical Discs Replace Hard Drives? Inside China’s 3D Nano‑Storage Breakthrough

Chinese researchers from USST and SIOM have demonstrated a 3‑D nano‑scale optical disc using dye‑doped photoresist that can store up to 200 TB (1.6 Petabit) on a DVD‑sized medium, promising ultra‑dense, long‑term storage but still facing challenges in write speed, energy efficiency, and commercial viability.