SK0-003 · Question #713
Which of the following RAID levels would be appropriate given two drives and a need for fault tolerance?
The correct answer is B. RAID 1. RAID 1 is the only RAID level among the options that provides fault tolerance with a minimum of two drives.
Question
Which of the following RAID levels would be appropriate given two drives and a need for fault tolerance?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 10
How the community answered
(47 responses)- A4% (2)
- B94% (44)
- D2% (1)
Why each option
RAID 1 is the only RAID level among the options that provides fault tolerance with a minimum of two drives.
RAID 0, or striping, requires at least two drives but offers no fault tolerance; a single drive failure results in data loss.
RAID 1, or mirroring, provides fault tolerance by writing identical data to two separate drives. This configuration allows the system to continue operating without data loss if one of the two drives fails.
RAID 5 requires a minimum of three drives to provide fault tolerance through striping with parity.
RAID 10 (or 1+0) requires a minimum of four drives, as it combines mirroring and striping for both performance and fault tolerance.
Concept tested: RAID levels and fault tolerance
Source: https://learn.microsoft.com/windows-server/storage/whats-new-in-storage/whats-new-in-storage-2016#storage-spaces
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