PAS-C01 Operations and Maintenance Practice Question
An SAP administrator notices that the /usr/sap directory on an EC2 instance is filling up. The instance is part of an SAP application server cluster. Which AWS service can be used to add additional storage without downtime?
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
✓
Amazon EBS
Amazon EBS volumes can be attached to EC2 instances and expanded without downtime using Elastic Volumes, making it the correct choice for adding storage to the /usr/sap directory. Option A (EFS) is a file system but may not provide the required low-latency block storage for SAP application servers. Option B (S3) is object storage, not suitable for an OS directory. Option D (Instance Store) is ephemeral and not persistent, so it cannot be used for permanent storage. Therefore, Amazon EBS is the appropriate service.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon EFS
Why it's wrong here
EFS is a file system but may have higher latency and is not typical for /usr/sap.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not mountable as a block device.
- ✓
Amazon EBS
Why this is correct
EBS allows online resizing of volumes without downtime.
- ✗
EC2 Instance Store
Why it's wrong here
Instance Store is ephemeral and data is lost on stop/termination.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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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.