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CompTIA

220-802 · Question #390

A user's PC has four hard drives in a RAID setup. After a single drive fails, the system will no longer boot and even rescue disks cannot see or access the volume. Which of the following RAID types…

The correct answer is A. 0. RAID 0 (striping) splits data across all drives for performance but has zero redundancy. A single drive failure results in complete data loss because the stripe set is broken - the volume becomes entirely inaccessible. RAID 1 (mirroring) survives a drive failure. RAID 5…

Hardware and network troubleshooting

Question

A user's PC has four hard drives in a RAID setup. After a single drive fails, the system will no longer boot and even rescue disks cannot see or access the volume. Which of the following RAID types was the user MOST likely using?

Options

  • A0
  • B1
  • C5
  • D6

How the community answered

(26 responses)
  • A
    85% (22)
  • B
    4% (1)
  • C
    4% (1)
  • D
    8% (2)

Explanation

RAID 0 (striping) splits data across all drives for performance but has zero redundancy. A single drive failure results in complete data loss because the stripe set is broken - the volume becomes entirely inaccessible. RAID 1 (mirroring) survives a drive failure. RAID 5 (striping with distributed parity) tolerates one drive failure. RAID 6 tolerates two simultaneous drive failures. Only RAID 0 causes total, unrecoverable volume loss from a single drive failure.

Topics

#RAID 0#data loss#RAID types#storage failure

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