SK0-004 · Question #253
Which of the following BEST describes RAID 10?
The correct answer is A. Mirroring with striping. RAID 10 nests RAID 1 mirroring inside RAID 0 striping, delivering both fault tolerance and improved throughput across a minimum of four drives.
Question
Which of the following BEST describes RAID 10?
Options
- AMirroring with striping
- BMirroring with fault tolerance
- CStriping
- DStriping with distributed parity
How the community answered
(42 responses)- A88% (37)
- B7% (3)
- C2% (1)
- D2% (1)
Why each option
RAID 10 nests RAID 1 mirroring inside RAID 0 striping, delivering both fault tolerance and improved throughput across a minimum of four drives.
RAID 10 (1+0) first creates mirrored pairs of drives using RAID 1, then stripes data across those pairs using RAID 0. This architecture tolerates the failure of one drive per mirrored pair while achieving the read/write performance benefits of striping, requiring at least four drives.
Describing RAID 10 as 'mirroring with fault tolerance' omits the striping layer entirely and does not distinguish RAID 10 from plain RAID 1.
Striping alone describes RAID 0, which provides no redundancy and is only one of the two components that together define RAID 10.
Striping with distributed parity describes RAID 5, which spreads parity data across all member drives rather than using dedicated mirrored drive pairs.
Concept tested: RAID 10 architecture combining mirroring and striping
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-fault-tolerance
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