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220-1201 · Question #345

A developer wants to protect critical data from hard drive failure. Their workstation has two hard drives. Which RAID level should they use?

The correct answer is B. RAID 1. RAID 1 (mirroring) is the only option that provides data protection from hard drive failure using a minimum of two hard drives. In a RAID 1 configuration, an exact copy of the data is simultaneously written to both disks. If one disk fails, the data is still accessible on the…

Submitted by haruto_sh· Mar 30, 2026Hardware

Question

A developer wants to protect critical data from hard drive failure. Their workstation has two hard drives. Which RAID level should they use?

Options

  • ARAID 0
  • BRAID 1
  • CRAID 5
  • DRAID 10

How the community answered

(36 responses)
  • A
    8% (3)
  • B
    75% (27)
  • C
    3% (1)
  • D
    14% (5)

Explanation

RAID 1 (mirroring) is the only option that provides data protection from hard drive failure using a minimum of two hard drives. In a RAID 1 configuration, an exact copy of the data is simultaneously written to both disks. If one disk fails, the data is still accessible on the remaining drive, ensuring no data loss and continuous operation. This makes it ideal for critical data on a workstation with limited drive capacity.

Topics

#RAID 1#disk mirroring#data redundancy#fault tolerance

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