DNA ‘cassette tape’ research hints at petabyte-scale cartridges and multi-century lifespan on paper — petabytes-per-meter density possible, but today it writes at kilobytes per hour by lukejamesalden@gmail.com (Luke James) from Latest from Tom's Hardware on 2025-09-13 15:30 (#700QH) Chinese researchers have developed a DNA cassette tape drive that theoretically offers petabytes of storage, but it fails in real-world tests.