SK0-003 · Question #311
Which of the following RAID arrays performs mirroring of the disks first, then striping of the disks?
The correct answer is D. RAID 10. RAID 10, also known as RAID 1+0, is a nested RAID level that combines mirroring and striping to provide both redundancy and performance.
Question
Which of the following RAID arrays performs mirroring of the disks first, then striping of the disks?
Options
- ARAID 1
- BRAID 0+1
- CRAID 6
- DRAID 10
How the community answered
(46 responses)- A9% (4)
- C4% (2)
- D87% (40)
Why each option
RAID 10, also known as RAID 1+0, is a nested RAID level that combines mirroring and striping to provide both redundancy and performance.
RAID 1 exclusively performs mirroring, creating exact duplicates of data on two or more disks, without any striping.
RAID 0+1 first stripes data across multiple disks (RAID 0) and then mirrors that entire striped set onto another set of striped disks, which is the opposite order of the question.
RAID 6 uses striping with dual distributed parity, meaning it provides fault tolerance through parity calculations rather than mirroring of data.
RAID 10 first creates mirrored pairs (RAID 1) of disks to ensure data redundancy. These mirrored sets are then striped together (RAID 0), distributing data across multiple mirrored pairs to enhance performance and I/O operations.
Concept tested: RAID levels and configurations
Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/initialize-new-disks
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