Correction for the amount of a Blu-ray Disc
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How much is 2,500 octets?
It's about 0.00000005 times as much as a Blu-ray Disc
The amount of a Blu-ray Disc is about 53,000,000,000 octets.
(a.k.a. BD) (dual-layer; Blu-ray disc)
A typical Blu-ray disc will hold 54,000,000,000 octets 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.