4.7 GB (single-sided, single-layer) 8.5 GB (single-sided, double-layer) 9.4 GB (double-sided, single-layer) 17.08 GB (double-sided, double-layer – rare) Blu-ray Disc Blu-ray Disc (official acronym BD, also known as BR or Blu-ray) is an  optical disc   storage  medium designed to supersede the standard  DVD  format. Its main uses are for storing  high-definition video ,  PlayStation 3  video games, and other  data ,