PAS-C01 Technology Practice Question
A company is deploying SAP NetWeaver on AWS and needs to ensure high availability for the ASCS instance. They plan to use a shared file system for the transport directory. Which AWS storage service is most appropriate for this shared file system?
⚠ Common exam trap
Test-takers frequently confuse 'shared file system' with 'shared block storage' and choose EBS multi-attach, not realizing that EBS multi-attach is limited to a single AZ and lacks the cross-AZ high availability required for SAP ASCS failover.
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 EFS
Amazon EFS provides a fully managed, scalable, and highly available NFS file system that can be mounted concurrently by multiple EC2 instances across multiple Availability Zones. For SAP NetWeaver ASCS high availability, the transport directory (/usr/sap/trans) must be shared between the active and passive ASCS instances, and EFS supports the required NFSv4 protocol with strong consistency and POSIX permissions, making it the most appropriate choice.
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 this is correct
EFS provides a shared NFS file system that can be accessed from multiple EC2 instances.
- ✗
Amazon EBS volumes with multi-attach
Why it's wrong here
Multi-attach is limited to certain instance types and not ideal for shared transport.
- ✗
EC2 Instance Store
Why it's wrong here
Instance Store is ephemeral and not shared.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a POSIX file system.
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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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.