The main types of DVDs that differ as to their capacity are:
|
DVD disc types |
First side |
Second side |
Total capacity |
||
|
First layer capacity |
Second layer capacity |
First layer capacity |
Second layer capacity |
||
|
DVD-5 |
4.7 Gb |
- |
- |
- |
4.7 Gb |
|
DVD-9 |
4.3 Gb |
4.3 Gb |
- |
- |
8.6 Gb |
|
DVD-10 |
4.7 Gb |
- |
4.7 Gb |
- |
9.4 Gb |
|
DVD-14 |
4.3 Gb |
4.3 Gb |
4.7 Gb |
- |
13.3 Gb |
|
DVD-18 |
4.3 Gb |
4.3 Gb |
4.3 Gb |
4.3 Gb |
17.2 Gb |
DVD-5 - single sided, single layer (disc capacity about 4.7 Gb, the working surface of such a disc is situated on one side of it and consists of one layer only);
DVD-9 - single sided, double layer (disc capacity about 8.6 Gb, the working surface of such a disc is situated on one side of it and consists of two layers about 4.3 Gb each);
DVD-10 - double sided, single layer on both sides (disc capacity about 9.4 Gb, the working surfaces of such a disc are situated on both its sides and either consists of one layer about 4.7 Gb);
DVD-14 - double sided, double layer on one side and single layer on the other side (disc capacity about 13.3 Gb, the working surfaces of such a disc are situated on both its sides and consist of two layers about 4.3 Gb each on one side and one layer about 4.7 Gb on the other side);
DVD-18 - double sided, double layer on both sides (disc capacity about 17.2 Gb, the working surfaces of such a disc are situated on both its sides and either consists of two layers about 4.3 Gb each).
Note:
the DVD capacity is measured in the so called decimal gigabytes (one gigabyte is equal to 1000 megabytes). The real size of the DVDs is smaller when measured in the so called computer gigabytes or gibibytes (one gigabyte is equal to 1024 megabytes).
