A new method of writing onto gold nanorods may provide as much as 10 TB of space on a single DVD sized disc!

10 TB is… it’s unimaginable to the average person. It’s far more than the information in an average library; it’s 521, 000 minutes of music at 320 kbps; it’s 400 Blu-ray discs; if the US Library of Congress digitized all its holdings into plain text, two of these discs could hold all of it.

The full article here:
BBC tech news.