Comment For scratches of the lower side of the disc (Score 1) 554
Simichrome is the best buffing paste.
Apply gently a small amount on the scratch and buff with small and firm movements with a clean flannel cloth.
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A Terabyte of Data on a Regular DVD? 200
Roland Piquepaille writes "This is the promise of the 3-D Optical Data Storage system developed at the University of Central Florida (UCF). This technology allows to record and store at least 1,000 GB of data on multiple layers of a single disc. The system uses lasers to compact large amounts of information onto a DVD and the process involves shooting two different wavelengths of light onto the recording surface. By using several layers, this technique will increase the storage capacity of a standard DVD to more than a terabyte. Read more for additional references and a diagram showing how this two-photon 3D optical system reads data."
