SK0-003 · Question #259
Which of the following RAID levels provides the HIGHEST fault tolerance possible?
The correct answer is D. RAID 10. RAID 10, a nested RAID level (RAID 1+0), combines the striping of RAID 0 with the mirroring of RAID 1. This configuration provides the highest fault tolerance among common RAID levels, capable of sustaining multiple disk failures under specific conditions.
Question
Which of the following RAID levels provides the HIGHEST fault tolerance possible?
Options
- ARAID 0
- BRAID 5
- CRAID 6
- DRAID 10
How the community answered
(24 responses)- B4% (1)
- C4% (1)
- D92% (22)
Why each option
RAID 10, a nested RAID level (RAID 1+0), combines the striping of RAID 0 with the mirroring of RAID 1. This configuration provides the highest fault tolerance among common RAID levels, capable of sustaining multiple disk failures under specific conditions.
RAID 0 offers no fault tolerance; any single disk failure results in complete data loss for the entire array.
RAID 5 provides fault tolerance against only a single disk failure within the array.
RAID 6 provides fault tolerance against two simultaneous disk failures using dual parity, but RAID 10 generally offers higher overall fault tolerance and often better recovery times for certain failure scenarios, as well as superior performance characteristics.
RAID 10 (RAID 1+0) provides the highest fault tolerance by combining mirroring (RAID 1) for redundancy within pairs and striping (RAID 0) across those pairs for performance. This setup allows for multiple disk failures without data loss, as long as no two failed disks are from the same mirrored set, offering superior protection compared to other options.
Concept tested: RAID level fault tolerance comparison
Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/understanding-raid
Topics
Community Discussion
No community discussion yet for this question.