The history of the CD is quite interesting when taken a cursory look through. The origin began with the “punch card”. Later assuming the shape of floppy disk, magnetic tape and the most recent form an optical disk more commonly known as the CD. In each stage, it began to attain the ability to store more and more data from a mere 7KB (kilobytes) to the 4GB DVD. Now its time for us to kiss DVD goodbye for not one but two heirs are standing on the doorstep waiting to replace it the Blu-Ray and HD-DVD. Like the traditional fight between two brothers for a throne, the struggle between these two Titans is all the rage now. HD-DVD, which stands for High-Definition DVD, is a high-density optical disc format designed for the storage of data and high-definition video. Developed by the joint collaboration between Toshiba and NEC, they aim to replace to the normal DVD with the HD-DVD. It has the ability to store 15GB per layer that is 3 times as much as the original DVD. Its comes with dual layer as well hence increasing its size limit upto 30GB. When used the dual layer on the double side it increase upto 60GB. The HD-DVD has been implemented in the Microsoft Xbox360. Its rival on the other hand, Blu-ray Disc, (also called BD) is a high-density optical disc format for the storage of digital media, including high-definition video. It has the ability to store upto 25GB per layer. Also comes with dual layer option which boosts the memory space upto 50GB. The double dual layer shoots the space upto 100GB. The funky sounding name Blu-Ray has been derived from the blue-violet laser used to read and write this type of disc. Its was developed by Sony and its implementation is done in the Sony Playstation3. Aside from baffeling the crackers, who have been desperately trying to crack the Blu-Ray technology and have failed, seems as it’s the more capable of the two brothers. Aside form the implementation in the consoles, these disks have also been used for storing movies. Adam Sandlers Click was the first ever Blu-Ray disc released in October10,2006. While the HD-DVDs were out before the 2006. The writer for HD-DVD was on 31^{st March 2006 in Japan at a price of $934, while the Blu-Ray wasOn December 4th 2006 Sony launched their first stand-alone player at a price of $1000. The major factor for it being superior is the extra 10 GB disk space in the basic single layer of both the new DVDs. When a raw comparision was made,it was found out that the Blu-Ray technology was beating HD-DVD at almost evey step. A recent comparision between the sales market of both these two competitors revealed that for every single HD-DVD sold, two of the Blu-Ray were sold. Hence Blu-Ray is defeating its opponent, on the ratio of 2:1. So its seems that with the beginning of a computing era soon the DVDs shall b replaced by the Blu-Ray.}