PAS-C01 Technology Practice Question
An SAP customer has deployed SAP HANA on AWS using an r5.12xlarge instance with 16 EBS io1 volumes for data and log. The system is running in production. The operations team receives an alert that one of the EBS volumes has failed (status check failed). The volume is part of the RAID 0 stripe for the data volume. What should they do to recover the system with minimal data loss?
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
✓
Restore the HANA database from the latest backup to a new set of EBS volumes.
Since the failed volume is part of a RAID 0 stripe, the entire stripe is compromised. Restoring from the most recent backup is the safest way to recover with minimal data loss. Option A (replace volume and rebuild RAID) may not work because RAID 0 has no redundancy. Option B (AWS Support) may help but not recover data directly. Option C (increase volume size) does not fix the failed volume.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Detach the failed volume, attach a new identical volume, and rebuild the RAID array.
Why it's wrong here
RAID 0 has no redundancy; data on the failed volume is lost and cannot be rebuilt from other volumes.
- ✗
Contact AWS Support to recover the data from the failed EBS volume.
Why it's wrong here
EBS volumes with status check failure may not be recoverable; data loss is likely.
- ✗
Increase the size of the remaining volumes to compensate for the lost capacity.
Why it's wrong here
Resizing does not recover lost data or restore functionality.
- ✓
Restore the HANA database from the latest backup to a new set of EBS volumes.
Why this is correct
Restoring from backup ensures data consistency and recovery with minimal loss.
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.