DVD-like optical disc could store 1.6 petabits (or 200 terabytes) on 100 layers
Researchers showcase 1-petabit optical disc for more efficient mass storage
If you're upgrading to a new computer, laptop or desktop, a modern PC may not support your old storage devices. This guide will give you options to connect your old storage drives to a new computer.
You don't have to use magnetism or electrical charge to store data. It can be done using light, or more rather, the reflection of it. Okay, if you want to be really specific, it's done using the interference of infrared and visible electromagnetic waves, but let's not worry too much about that!