VCP-DCV Configure and Manage vSphere Storage Practice Question
Which THREE of the following are characteristics of vSAN stretched clusters?
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
✓
Provides site-level fault tolerance
Stretched clusters require a witness host in a third location, provide site-level fault tolerance, and require two fault domains (one per site). RAID 5/6 is supported but not unique to stretched clusters; it is still a single vSAN cluster.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Provides site-level fault tolerance
Why this is correct
Stretched clusters survive failure of an entire site.
- ✓
Requires two fault domains (one per site)
Why this is correct
Each site is configured as a fault domain.
- ✓
Requires a witness host in a third location
Why this is correct
The witness breaks ties if one site fails.
- ✗
Supports RAID 5/6 erasure coding
Why it's wrong here
RAID 5/6 is supported in vSAN generally, not a characteristic specific to stretched clusters.
- ✗
Uses a dedicated vSAN cluster separate from the main datastores
Why it's wrong here
It is the same cluster, not separate.
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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