Crossword Genius

Detective receiving cut, having secured second data storage item (4)

Ross

I believe the answer is:

disc

I'm a little stuck... Click here to teach me more about this clue!

'storage item' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'detective receiving cut having secured second data' is the wordplay.
I cannot quite understand how this works, but
'detective' could be 'di' (Detective Inspector abbreviation) and 'di' is found within the answer.
'second' could be 's' (common abbreviation) and 's' is found in the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for disc that I've seen before include "Circular flat structure in the spine" , "Gramophone record" , "Compact ---; slipped ---" , "jockey may be after" , "Circle" .)

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