SK0-003 · Question #253
Which of the following BEST describes RAID 10?
The correct answer is A. Mirroring with striping. RAID 10 is a nested RAID level that combines RAID 1 (mirroring) and RAID 0 (striping), offering both performance benefits and high data redundancy. It works by striping data across multiple mirrored sets.
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
(24 responses)- A92% (22)
- B4% (1)
- D4% (1)
Why each option
RAID 10 is a nested RAID level that combines RAID 1 (mirroring) and RAID 0 (striping), offering both performance benefits and high data redundancy. It works by striping data across multiple mirrored sets.
RAID 10, also known as RAID 1+0, creates mirrored pairs of disks (RAID 1) and then stripes data across these mirrored sets (RAID 0). This architecture provides excellent performance through striping and high fault tolerance from mirroring, as two disk failures can be tolerated under certain conditions.
While RAID 10 provides fault tolerance through mirroring, simply stating 'mirroring with fault tolerance' doesn't fully capture the striping component, which is crucial for its performance characteristics.
Striping alone describes RAID 0, which does not include the redundancy provided by mirroring, making this an incomplete description of RAID 10.
Striping with distributed parity describes RAID 5 or RAID 6, which use parity for redundancy, a different mechanism than the mirroring used in RAID 10.
Concept tested: RAID 10 characteristics and architecture
Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/raid-levels
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