SK0-003 · Question #284
Which of the following RAID levels can withstand the simultaneous loss of two physical drives in an array?
The correct answer is D. RAID 10. The question asks to identify a RAID level capable of tolerating two simultaneous drive failures. RAID 10 provides this capability through its nested mirrored and striped configuration.
Question
Which of the following RAID levels can withstand the simultaneous loss of two physical drives in an array?
Options
- ARAID 0
- BRAID 3
- CRAID 5
- DRAID 10
How the community answered
(37 responses)- A3% (1)
- C5% (2)
- D92% (34)
Why each option
The question asks to identify a RAID level capable of tolerating two simultaneous drive failures. RAID 10 provides this capability through its nested mirrored and striped configuration.
RAID 0 provides no fault tolerance and will fail with the loss of any single drive.
RAID 3 uses a single dedicated parity drive and can only withstand the loss of one drive.
RAID 5 uses distributed parity and can only withstand the loss of one drive.
RAID 10 (RAID 1+0) combines mirroring (RAID 1) and striping (RAID 0). Because data is mirrored, as long as each mirror set retains at least one working drive, the array can withstand multiple drive failures, including the simultaneous loss of two drives, provided they are not within the same mirrored pair.
Concept tested: RAID fault tolerance for multiple drive failures
Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/understanding-raid
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