SK0-003 · Question #624
Which of the following is the minimum number of drives in an RAID 10 configuration?
The correct answer is C. 4. RAID 10 (RAID 1+0) combines mirroring (RAID 1) with striping (RAID 0), requiring a minimum of four physical drives to implement its configuration.
Question
Which of the following is the minimum number of drives in an RAID 10 configuration?
Options
- A2
- B3
- C4
- D6
How the community answered
(43 responses)- A5% (2)
- B7% (3)
- C86% (37)
- D2% (1)
Why each option
RAID 10 (RAID 1+0) combines mirroring (RAID 1) with striping (RAID 0), requiring a minimum of four physical drives to implement its configuration.
Two drives can form a RAID 0 (striping) or RAID 1 (mirroring) array, but not a RAID 10.
Three drives can form a RAID 5 array, but not a RAID 10, which requires an even number of drives in pairs.
RAID 10 (also known as RAID 1+0) is a nested RAID level that combines RAID 1 (mirroring) and RAID 0 (striping). It requires at least two mirrored pairs, where each pair consists of two drives. Therefore, to form at least one striped set of mirrored pairs, a minimum of four physical drives is necessary for a RAID 10 configuration.
Six drives is a valid number for a RAID 10 array, allowing for more redundancy and capacity, but it is not the *minimum* required.
Concept tested: RAID 10 minimum drive requirement
Source: https://learn.microsoft.com/en-us/windows/win32/fileio/raid-levels
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