What Data Storage Means

Data storage is the way computers keep information so it can be used later, even after a program closes or a device restarts. In this lesson, Professor Amit Kumar introduces the core idea of persistence: why some data disappears when memory is powered off, while other data is written to storage and remains available.

You will learn the difference between volatile and non-volatile storage, how data is represented as bits, and why storage is more than just “saving files.” The lesson also explains the practical reasons we store data: retrieval, sharing, recovery, and long-term reliability.