PAS-C01 Migration Practice Question
A company is migrating its SAP systems to AWS and needs to ensure high availability for the SAP Central Services (ASCS) instance. Which AWS service can be used to implement a failover cluster for ASCS?
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
✓
AWS using shared file system and DNS-based failover
For SAP ASCS failover, AWS recommends using a shared file system (e.g., Amazon EFS) combined with DNS-based failover via Route53. This provides high availability without requiring additional clustering software. Option C correctly describes this approach. Option A (Amazon S3) is object storage, not suitable for ASCS. Option B (Application Load Balancer) handles inbound traffic, not ASCS clustering. Option D (Amazon RDS Multi-AZ) is for database high availability, not ASCS.
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 S3
Why it's wrong here
S3 is for object storage, not for clustering.
- ✗
Application Load Balancer (ALB)
Why it's wrong here
ALB is for HTTP/HTTPS traffic, not for ASCS failover.
- ✓
AWS using shared file system and DNS-based failover
Why this is correct
Shared file system (e.g., EFS) with DNS-based routing provides ASCS failover.
- ✗
Amazon RDS Multi-AZ
Why it's wrong here
RDS is for databases, not ASCS.
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 |
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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.