Is an advanced optical disc technology that can store up to 3.9 terabytes, roughly 75–150 times more data than the blu-ray optical disc system although it is the same size and shape as a regular digital video disc (dvd).
a. back-side
b. expansionc. internal
d. input/output

"The holographic versatile disc".

Explanation:

According to my research on optical disk technology, I can say that based on the information provided within the question the technology being described in the question is called a "The holographic versatile disc".

Unfortunately it is not shown as an available answer but it is the correct answer. This is the only optical disk technology capable of holding 3.9 terabytes of data as well as meeting the specs mentioned in the question.

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