A four-drive Linux NAS has been improperly configured. Each drive has a capacity of 6TB, for a total storage capacity of 24TB. To reconfigure this unit to be not pluggable for drive replacement and…

The correct answer is C. RAID 10. RAID 10 (also called RAID 1+0) stripes data across mirrored pairs. With four 6TB drives, RAID 10 creates two mirrored pairs and stripes across them, yielding 12TB of usable storage (50% of raw capacity) - squarely within the 11–12TB requirement. RAID 10 is designed for fixed…

System Management

Question

A four-drive Linux NAS has been improperly configured. Each drive has a capacity of 6TB, for a total storage capacity of 24TB. To reconfigure this unit to be not pluggable for drive replacement and provide total storage of 11TB to 12TB, which of the following would be the correct RAID configuration?

Options

ARAID 01
BRAID 03
CRAID 10
DRAID 50

How the community answered

(21 responses)

A
14% (3)
B
5% (1)
C
76% (16)
D
5% (1)

Explanation

RAID 10 (also called RAID 1+0) stripes data across mirrored pairs. With four 6TB drives, RAID 10 creates two mirrored pairs and stripes across them, yielding 12TB of usable storage (50% of raw capacity) - squarely within the 11–12TB requirement. RAID 10 is designed for fixed drive configurations and is not inherently hot-plug dependent. RAID 01 (option A) stripes first then mirrors, providing the same usable capacity but with worse fault tolerance (losing one drive can expose the entire stripe set). RAID 03 (option B) is a non-standard rarely-used configuration. RAID 50 (option D) requires a minimum of 6 drives (two RAID 5 sets striped together) and cannot be built with only 4 drives. RAID 10 is the only option here that satisfies both the drive count and the usable storage requirement.

Topics

#RAID levels#Storage configuration#Data storage capacity#Linux system administration

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