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