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The minimum number of disks in RAID level 2 is ________

(a) 3

(b) 4

(c) 2

(d) 1

I got this question in exam.

This intriguing question comes from SCADA System topic in section SCADA System for Bioreactors, Beer and Brewing of Fermentation Technology

1 Answer

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by (424k points)
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Best answer
Correct choice is (a) 3

For explanation I would say: The minimum number of disks in RAID level 2 is three. It is used in the error correction for old hard disks without built-in error correction. It has no practical application with modern hard disks.

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