Capacity 700MB, available from 1982
CD
Capacity 4.5/4.7GB, available from 1995
DVD
Capacity 25GB, available from 2005
BD
Dual layer BD
50GB
Single-sided, double-layer DVD
7.95GB
Double-sided, single-layer DVD
8.75GB
Double-sided, double-layer DVD
15.9GB
HD-DVD
15GB (Single-layer), 30GB (double-layer)
Mini-Blu Ray disc
7.8GB single layer, 15.6GB double layer