by Alex Pensado
When the format war started between Blu-ray and HD disc the outcome was foreseeable that Blu-ray being more efficient would succeed. teh prediction came through. One of Blu-ray's most know advantage towards HD was its memory storage, using blue wavelengths to be able to have 25 GB storage instead of the regular 15. The question became can anything go beyond Blu-ray's superior storage memory? The answer soon came with a yes; Holographic Data Storage (HDS) was the promising answer. However, even though the idea shows grate potential it has its very intricate draw backs. The idea of using the concept of three dimensional storage instead of two dimensional made it possible to create memory storage beyond Blue-ray.
The question is how the Holographic memory storage exactly works. The answer comes with the idea that HDSis based on volume instead of surface area. It is created by using a mixture of two beams: Reference and Signal. This is very essential to the process, and if there is any vibration during the making the entire process would be ruined. If successful this result in tiny three-dimensional hologram, this technique is known as micro-holographic storage, each single location can hold around 150 million pages which is about sixty times more than DVD can. Not only does this provide an extensively greater memory capacity but it also allows it to be faster. Using this method the first generation of holographic storage should range of 200 - 300 GB. Some predict that with further development it will eventually be able to have terabyte of memory in the near future serving several purposes.
References:
http://www.manifest-tech.com/media_dvd/dvd_holo.htm
http://www.azdug.org/
http://www.techdigest.tv/2009/04/ge_creates_500g.html
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