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220-801 · Question #28

Which of the following requires a MINIMUM of four hard drives?

The correct answer is D. RAID 10. RAID 10 (also called RAID 1+0) is a nested RAID level that combines mirroring (RAID 1) and striping (RAID 0). It requires a minimum of four drives: two mirrored pairs that are then striped together. RAID 0 and RAID 1 each need a minimum of two drives. RAID 5 requires a minimum of

Hardware

Question

Which of the following requires a MINIMUM of four hard drives?

Options

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

How the community answered

(45 responses)
  • A
    2% (1)
  • B
    7% (3)
  • C
    2% (1)
  • D
    89% (40)

Explanation

RAID 10 (also called RAID 1+0) is a nested RAID level that combines mirroring (RAID 1) and striping (RAID 0). It requires a minimum of four drives: two mirrored pairs that are then striped together. RAID 0 and RAID 1 each need a minimum of two drives. RAID 5 requires a minimum of three drives (it uses distributed parity). RAID 10 is the only option here that mandates at least four drives.

Topics

#RAID 10#RAID levels#minimum drives#storage

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