350-601 Storage Network Practice Question
Which RAID level provides both striping and mirroring for high performance and fault tolerance?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
RAID 10
RAID 10 (also known as RAID 1+0) combines mirroring and striping to provide both high performance and redundancy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RAID 0
Why it's wrong here
RAID 0 offers striping only, no redundancy.
- ✗
RAID 5
Why it's wrong here
RAID 5 uses striping with distributed parity.
- ✓
RAID 10
Why this is correct
RAID 10 combines mirroring and striping for performance and fault tolerance.
- ✗
RAID 6
Why it's wrong here
RAID 6 uses striping with dual parity.
Quick reference
RAID Level Comparison
| RAID Level | Min Disks | Fault Tolerance | Read | Write | Usable Capacity |
|---|---|---|---|---|---|
| RAID 0 | 2 | None | Excellent | Excellent | 100% |
| RAID 1 | 2 | 1 disk | Good | Moderate | 50% |
| RAID 5 | 3 | 1 disk | Good | Moderate | 67–94% |
| RAID 6 | 4 | 2 disks | Good | Lower | 50–88% |
| RAID 10 | 4 | 1 disk per mirror | Excellent | Good | 50% |
RAID is not a backup strategy — it protects against disk failure but not against accidental deletion, ransomware, or site-level events.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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