Blu-ray is an optical disc technology that was designed to hold video in high definition format. It's storage capacity is five times greater than a traditional DVD, making it the ideal format for high definition video and audio. A Blu-ray disc requires a special Blu-ray player that is equipped to read the new disc style. These players will also play all of your traditional DVDs. Blu-ray gets it's name from the blue colored laser that it uses to read the disc. This laser can be finely focused allowing for more information on the disc when compared to standard red laser technology.