Sony DADC manual DVD family, Disc Type Capacity 12 cm, DVD Types and Formats

The DVD family

1.2. DVD Types and Formats

A DVD consists of two halves, where each half disc is 0.6 mm thick holding one or two layers of information.

The DVD format provides multiple configurations of data layers. Each layer provides additional data capacity.

	Disc Type	Capacity 12 cm
DVD-5	single sided, single layer	4.7	GB
DVD-9	single sided, dual layer	8.5	GB
DVD-10	double sided, single layer	9.4	GB
DVD-18	double sided, dual layer	17.1	GB

DVD-5

1.2mm

0.6mm

substrate	reflective
	layer
	single side
substrate
	single layer

movable Iens

The total capacity of a single side, single layer DVD is 4.7 GB, which is 7 times the data capacity of today’s CD-ROMs.

DVD-9

1.2mm

0.6mm

	reflective
substrate	layer
	semi reflective
	layer
substrate	single side
	dual layer
movable Iens

The total capacity of a single side, dual layer DVD is 8.5 GB, which is 13 times the data capacity of today’s CD-ROMs.

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