SG0-001 · Question #241
Which of the following RAID levels is also known as mirroring?
The correct answer is B. RAID 1. RAID 1 is also known as mirroring because it duplicates data across two or more disks, providing redundancy and fault tolerance.
Question
Which of the following RAID levels is also known as mirroring?
Options
- ARAID 0
- BRAID 1
- CRAID 3
- DRAID 5
How the community answered
(32 responses)- B91% (29)
- C6% (2)
- D3% (1)
Why each option
RAID 1 is also known as mirroring because it duplicates data across two or more disks, providing redundancy and fault tolerance.
RAID 0, or striping, distributes data across multiple disks without redundancy, which is not mirroring and offers no fault tolerance.
RAID 1, or mirroring, duplicates all data from one disk to another, ensuring that if one disk fails, the data is still available on the mirrored disk. This provides high data redundancy and fault tolerance by maintaining an identical copy of the data.
RAID 3 uses striping with a dedicated parity disk for error recovery, which is not mirroring.
RAID 5 uses striping with distributed parity across all disks, which provides fault tolerance but is not mirroring.
Concept tested: RAID levels and their characteristics
Source: https://learn.microsoft.com/en-us/windows/win32/fileio/about-raid
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