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What are DVD-5, DVD-9, DVD-10, and DVD-18?

by Edwin Liu | April 25, 2013 15:14 PM
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Generally speaking, there exist 4 types of DVDs including DVD-5, DVD-9, DVD-10, and DVD-18. Many people know very little about them and often ask questions like: what are the differences between DVD-5, DVD-9, DVD-10, and DVD-18? What’s the capacity of each type? ... Now follow this article and have a comprehensive understanding of these different sizes of DVDs.

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  1. DVD-5 is a single-sided single-layer disc, can hold about 4.7 GB (4.38GiB) of data and is supported by DVD+R, DVD+RW, DVD-R and DVD-RW. It is the most common DVD media.
  2. DVD-9 is a single-sided dual-layer disc, can store 8.5 GB (7.96GiB) of data. It is supported by DVD+R and DVD-R formats. It is also called DVD+R9/DVD+R DL, DVD-R9/DVD-R DL.
  3. DVD-10 is a double-sided single-layer disc, can contain 9.4 GB (8.76GiB) of data with 4.7 GB on each side, equivalent to two DVD-5 discs and is supported by DVD+R, DVD+RW, DVD-R and DVD-RW formats.
  4. DVD-18 is a double-sided dual-layer disc, can hold 17.1 GB (15.93GiB) of data with 8.5 GB on each side, equivalent to two DVD-9 discs. It is supported by DVD+R format.

Besides, there once were DVD-14 discs used for a very short period time but it doesn’t exist anymore. DVD-14 is a double-sided single-layer with one side single layer and one side double layer, or we can say that one side is DVD-5 and the other side is DVD-9. It can store up to 13.24GB of data.

For your reference:

  1. GB and GiB are not the same things. 1GB=1000³ bytes and 1GiB=1024³ bytes. 1Gib ≈ 1.074GB
  2. Double-sided disc refers to a disc of which both sides are used to store data. And single-sided disc means the data stored in one side of the disc. The double-sided discs are often 50% more expensive than the single-sided DVDs.

  3. Dual-layer DVD disc, also called double layer DVD, has two recordable layers on one side of the disc. Each layer of dual-layer DVD can store the standard 4.7 gigabytes of information that a single layer disc stores. And when recording, DVD-DL has slower write speed as compared to ordinary DVD. Also dual-layer DVDs are twice as expensive as single-layer DVDs. The drive with dual-layer capability accesses the second layer by shining the laser through the first semitransparent layer.

 

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