Question 119 of 144
SK0-005 server-hardware-installation-management Practice Question
A technician is monitoring a server with a RAID 5 array that has a hot spare. One of the drives fails. Which of the following actions will occur automatically in this configuration?
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
✓
The hot spare will be activated and the array will start rebuilding
When a hot spare is present, the RAID controller automatically activates the spare and begins rebuilding the array without operator intervention. Degraded operation without a hot spare requires manual replacement. Shutdown and mirroring are not typical behaviors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The server will shut down to protect data
Why it's wrong here
RAID 5 can tolerate a single drive failure without shutting down; a hot spare prevents even degraded operation.
- ✗
The array will continue to operate in degraded mode until manual intervention
Why it's wrong here
This would happen if no hot spare were configured; with a hot spare, the rebuild is automatic.
- ✗
The data will be mirrored to another server
Why it's wrong here
Mirroring between servers is a separate replication feature, not a function of RAID or hot spares.
- ✓
The hot spare will be activated and the array will start rebuilding
Why this is correct
This is the standard behavior of a hot spare—automatic replacement and rebuild to restore redundancy.
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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Last reviewed: Jul 26, 2026
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