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235 zettabytes is about 5,000,000,000,000 times as much as a Blu-ray Disc.
In other words, the amount of a Blu-ray Disc is 0.000000000000190 times that amount.
(a.k.a. BD) (dual-layer; Blu-ray disc)
A typical Blu-ray disc will hold 0.0000000000450 zettabytes of data. The increase in capacity versus a standard DVD is possible because of the smaller wavelength of blue light — 405 nanometers instead of 650 nanometers for the red laser light used in a DVD.
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