Blu-ray Disc

Also called BD, Blu-ray Disc is a high-density optical disc format for the storage of digital information, including high-definition video. A single-layer Blu-ray Disc can store 25 GB, over five times the size of a single-layer DVD at 4.7 GB. A dual-layer Blu-ray Disc can store 50 GB, almost 6 times the size of a dual-layer DVD at 8.5 GB.

Typical uses include the following:

Storage of large amounts of data

High-definition video playback and storage

20 Chapter 5 Optical drive