A DVD-sized disk that can store 1 million movies

https://techxplore.com/news/2024-02-dvd-sized-disk-million-movies.html

"petabyte data storage using new material coating DVDs creating multiple layers on a disk, and new laser techniques etching individual layers using special light patterns and a coating dye allowing etchings at nanoscale... 3D storage with up to 100 instead of 1 layer...  for consumers, data storage facilities, businesses and media companies... future: faster and using less energy"