The correct architecture is a dual-cluster setup: deploy ASCS with a cluster across two Availability Zones and use HANA System Replication across two AZs. This is required because SAP ASCS relies on a Pacemaker cluster with SBD fencing to provide failover for central services, while HANA System Replication synchronously copies the database to a secondary AZ for automatic failover. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of SAP’s certified HA patterns on AWS—specifically that both the application tier and database tier need independent clustering mechanisms. A common trap is assuming a single cluster can handle both ASCS and HANA, but SAP mandates separate clusters for each critical component. Memory tip: think “two layers, two clusters”—ASCS needs fencing, HANA needs replication, and both must span AZs for true high availability.
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An SAP system on AWS needs to be highly available across multiple Availability Zones (AZs). The SAP Central Services (ASCS) and the database are both critical. Which architecture should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy ASCS with a cluster across two AZs, and use HANA System Replication across two AZs.
Option B is correct because SAP ASCS requires a cluster (e.g., Pacemaker with SBD fencing) across two AZs to provide failover for the central services, while HANA System Replication (HSR) synchronously replicates the database to a secondary AZ for automatic failover. This dual-cluster architecture ensures both critical components remain highly available, meeting SAP's certified HA patterns on AWS.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use an Application Load Balancer to distribute traffic across AZs.
Why it's wrong here
ALB provides HA for web tier, not for ASCS or database.
✓
Deploy ASCS with a cluster across two AZs, and use HANA System Replication across two AZs.
Why this is correct
This provides HA for both ASCS and database across AZs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Place all components in a single AZ to avoid cross-AZ latency.
Why it's wrong here
Single AZ is a single point of failure.
✗
Use Amazon RDS Multi-AZ for the database and a single ASCS instance.
Why it's wrong here
RDS Multi-AZ is for databases supported by RDS, not SAP HANA typically.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS-managed services like RDS Multi-AZ with SAP-certified HA solutions, failing to recognize that SAP HANA requires native replication and that ASCS must be clustered, not simply load-balanced.
Detailed technical explanation
How to think about this question
Under the hood, SAP ASCS clustering uses Pacemaker with STONITH (e.g., AWS fence agent) to ensure only one node serves the enqueue and message server at a time, while HANA System Replication uses log-based synchronous replication with a replication mode of 'sync' to guarantee zero data loss. In a real-world scenario, if the primary AZ fails, the ASCS cluster triggers a failover to the secondary AZ within 30-60 seconds, and HSR automatically promotes the secondary HANA instance to primary, requiring careful tuning of the AWS network ACLs and route tables to maintain replication traffic.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy ASCS with a cluster across two AZs, and use HANA System Replication across two AZs. — Option B is correct because SAP ASCS requires a cluster (e.g., Pacemaker with SBD fencing) across two AZs to provide failover for the central services, while HANA System Replication (HSR) synchronously replicates the database to a secondary AZ for automatic failover. This dual-cluster architecture ensures both critical components remain highly available, meeting SAP's certified HA patterns on AWS.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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