Hitachi multi-layer DVD holds 200 films

This article from ZD-Net discusses a new technology from Hitachi that may allow up to 400 hours of video or the equivalent of 200 movies on a single disk based on the use of multi-layer technology. They expect the technology to be deployable in 2007.

Hitachi has developed a DVD system with multiple layers, which allows far more information to be stored on a single disk.

Although 2007 seems like a long way off, if we look at the curve of increasing disk capacity, I'll bet that this isn't too far off. The article does not state how large the capacity of the disks are, but we can make some calculations based on today's DVDs. Today's DVD is 4.7GB for ~2 hours. This would make the new disks about 1TB in size!