We've heard about 1TB-sized optical discs in the past, but TDK has now revealed a 1TB monster of its own at CEATEC. Unlike existing Blu-rays which use four recording layers at most, TDK's creation features 16 layers on both sides of the disc, each capable of storing up to 32GB apiece. If you're keeping track of the optical storage arms race, that's seven more gigabytes per layer than Pioneer's 400GB and 500GB disc achievements made back in 2008. TDK's prototype also has the potential to leverage existing Blu-ray technologies, since it's made from a material already found in BDs and shares the same beam aperture. On the down side, the current version's recording layers measure 260μm -- that's more than twice as thick as its Blu-ray counterpart -- and causes aberrations in today's fat-layer-hating optical lenses. Outside of its Biggest Loser qualifications, though, TDK says "its commercialization depends on disc manufacturers." Considering the company has yet to sell the 10-layer 320GB discs revealed at CEATEC 2009, however, we're doubtful this 1TB improvement will hit stores anytime soon.