The main optical storage devices are: CD ROM (CD R). – Compaq Disc Read Only MemoryCD RW. – Compaq Disc Memorable R. – Digital Video Disc or Digital Versatile Memorable Disc OnlyDVD RW. – Digital Video Disc or Digital Versatile Memorable Disc WritableDVD R DL. – Digital Video Disc or Digital Versatile Memorable Disc Only Double LayerBlu-rayDisc. – Blue Ray Name defined by the beam of light of the laser (also known like YOU) CD-ROM CD of Data storage, its content can be read without I number of times but it cannot be modified nor be eliminated engraving once. CD RW Optical CD of Storage that can time and time again be recorded and be erased its content.

DVD-R DVD of Storage whose content that keeps cannot be modified nor be eliminated. DVD RW DVD of Storage that can time and time again be recorded and be erased its content. DVD RW DL DVD of Storage double layer that can time and time again be recorded and be erased its content. Blu-ray It is an optical disk format of new generation of 12 cm of diameter (just as the CD and the DVD) is used for high resolution video and data storage of HD. The Laser which it has to writing and reading allows to manage to increase the capacity of storage over DVD because the blue laser has a smaller used wavelength than the laser in the traditional systems Its capacity of storage at the moment arrives at 50 GB to double castrates and 25 GB to a layer. Studies indicate that a Blu-ray format has been developed able to store 400 GB. Note: the previous types of Disc with LightScribe characteristics (in Spanish &quot exist; Scripture by Light laser) this variation consists of which they count on a layer used by the units of CD or DVD to label the obverse of Cd or Dvd by means of Laser (to record, to shape, to draw images, texts or any type of design.