98-365 · Question #15
Which RAID level can consist of two disks and provides redundancy?
The correct answer is B. RAID 1. RAID 1, also known as mirroring, uses two disks to duplicate data, providing redundancy and ensuring data availability if one disk fails.
Question
Which RAID level can consist of two disks and provides redundancy?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 10
How the community answered
(26 responses)- A4% (1)
- B92% (24)
- D4% (1)
Why each option
RAID 1, also known as mirroring, uses two disks to duplicate data, providing redundancy and ensuring data availability if one disk fails.
RAID 0 stripes data across multiple disks without any redundancy, meaning a single disk failure results in data loss.
RAID 1 duplicates data across two disks, ensuring that if one disk fails, the data is still available on the other, thus providing redundancy with a minimum of two disks.
RAID 5 requires a minimum of three disks and uses parity for redundancy, not two disks.
RAID 10 requires a minimum of four disks, as it is a combination of RAID 1 (mirroring) and RAID 0 (striping).
Concept tested: RAID levels and disk redundancy
Source: https://learn.microsoft.com/windows-server/storage/disk-management/initialize-new-disks
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