Researchers at China’s University of Shanghai for Science and Technology have invented an ultrahigh density optical disc format they claim can store up to 1.6 petabits — more than 1,500 terabytes, or 125,000 gigabytes — of data. While the new discs are said to look like typical Blu-rays, the data is written to one hundred layers in a 3D stacking architecture by a 54-nanometer laser that is about one-tenth the size of visible light waves. The same laser is used to read the data back. The tech is said to present “a promising solution for cost effective, long-term archival data storage.” Continue reading New Chinese Optical Disc Promises Petabyte-Plus of Storage