This information today:
Holographic Versatile Disc (HVD) Alliance to promote One Terrabyte Data Disks
February 5, 2005 Six companies including CMC Magnetics, Fuji Photo Film, Nippon Paint, Optware, Pulstec and Toagosei have announced the formation of the "HVD Alliance" to promote the development of HVD technology. Holographic recording technology records data on discs in the form of laser interference fringes, enabling discs the same size as today's DVDs to store more than one terabyte of data (200 times the capacity of a single layer DVD), with a transfer rate of over one gigabit per second (40 times the speed of DVD). This approach is rapidly gaining attention as a high-capacity, high-speed data storage technology for the age of broadband.
http://www.gizmag.com.au/go/3661/