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
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)- A2% (1)
- B7% (3)
- C2% (1)
- D89% (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.
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