The correct answer is to deploy two EC2 instances in different Availability Zones with a shared Amazon EFS filesystem and use Route53 health checks for failover. This architecture meets high availability for SAP ASCS and ERS on AWS because SAP’s enqueue replication and shared /sapmnt and /usr/sap/trans directories require a cluster-aware filesystem like EFS, and AWS does not support floating IPs for cluster failover, so Route53 DNS-based health checks provide the automatic failover mechanism. On the PAS-C01 exam, this question tests your understanding that SAP ASCS high availability on AWS relies on a shared filesystem and DNS failover rather than traditional cluster IPs, a common trap being to select Multi-AZ RDS or Global Accelerator, which address database or global traffic needs, not ASCS failover. A helpful memory tip: “No floating IP, no problem—Route53 and EFS keep SAP ASCS humming across AZs.”
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of migration. 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.
A company is migrating its SAP system to AWS and needs to ensure high availability for the SAP Central Services (ASCS). The solution must support automatic failover in the event of an instance failure. Which AWS architecture meets these requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy two EC2 instances in different Availability Zones with a shared Amazon EFS filesystem and use Route53 health checks for failover
SAP ASCS high availability on AWS is achieved using a cluster spanning two Availability Zones with a shared EFS filesystem for the /sapmnt and /usr/sap/trans directories. AWS does not support cluster-based floating IPs, so Route53 health checks are used for failover. Option A (Multi-AZ RDS) is for databases. Option B (AWS Global Accelerator) is for traffic routing. Option C (Two EC2 instances in an Auto Scaling group with EFS) is the correct approach. Option D (Single EC2 with EBS) lacks high availability.
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.
✗
Deploy ASCS on Amazon RDS Multi-AZ
Why it's wrong here
ASCS is not a database; RDS is for databases.
✓
Deploy two EC2 instances in different Availability Zones with a shared Amazon EFS filesystem and use Route53 health checks for failover
Why this is correct
This is the standard architecture for ASCS HA on AWS.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Global Accelerator with a static IP
Why it's wrong here
Global Accelerator provides static IPs but does not automatically failover ASCS.
✗
Deploy a single EC2 instance with a large EBS volume
Why it's wrong here
Single instance does not provide high availability.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Migration — This question tests Migration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy two EC2 instances in different Availability Zones with a shared Amazon EFS filesystem and use Route53 health checks for failover — SAP ASCS high availability on AWS is achieved using a cluster spanning two Availability Zones with a shared EFS filesystem for the /sapmnt and /usr/sap/trans directories. AWS does not support cluster-based floating IPs, so Route53 health checks are used for failover. Option A (Multi-AZ RDS) is for databases. Option B (AWS Global Accelerator) is for traffic routing. Option C (Two EC2 instances in an Auto Scaling group with EFS) is the correct approach. Option D (Single EC2 with EBS) lacks high availability.
What should I do if I get this PAS-C01 question wrong?
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is migrating an SAP system to AWS and needs to ensure high availability for SAP Central Services (ASCS) and Enqueue Replication Server (ERS). Which architecture meets SAP's high availability requirements?
hard
✓ A.Use a cluster solution with a shared file system and a virtual IP address in a multi-AZ setup
B.Deploy ASCS and ERS in a single Availability Zone with an automatic restart
C.Use an Application Load Balancer to distribute traffic between ASCS and ERS
D.Configure Amazon Route 53 health checks to failover between ASCS and ERS
Why A: Option D is correct because using a cluster with a shared file system and a virtual IP address in a multi-AZ deployment is the standard SAP HA architecture. Option A is wrong because a single AZ does not protect against AZ failure. Option B is wrong because an Application Load Balancer is not suitable for ASCS/ERS. Option C is wrong because Route 53 health checks alone do not provide the fast failover required.
Variation 2. 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?
easy
A.Amazon S3
B.Application Load Balancer (ALB)
✓ C.AWS using shared file system and DNS-based failover
D.Amazon RDS Multi-AZ
Why C: AWS offers the SAP on AWS High Availability guide, but for ASCS failover, the recommended approach is using a shared file system (e.g., EFS) and AWS services like Route53 for DNS failover. Option D is the best answer. Option A (ELB) is for web traffic. Option B (RDS) is for databases. Option C (S3) is object storage.
Variation 3. An organization is migrating a SAP ERP system to AWS. The system has a requirement for high availability for the SAP Central Services (ASCS) instance. Which architecture should be used to meet this requirement?
hard
A.Deploy the ASCS on a single EC2 instance with a Multi-AZ RDS database.
✓ B.Deploy two ASCS instances in different Availability Zones with a shared Amazon EFS or FSx for Windows File Server and a floating IP using Route 53.
C.Deploy two ASCS instances in different Availability Zones with an EBS volume attached to both.
D.Use an Application Load Balancer to distribute traffic between two ASCS instances.
Why B: Option D is correct because SAP ASCS requires a shared filesystem and a floating IP for high availability. AWS provides this using EFS or FSx for shared storage and a Route 53 health check with a secondary IP or an NLB with a static IP. Option A is wrong because Multi-AZ RDS is for databases, not ASCS. Option B is wrong because ALB does not support floating IPs. Option C is wrong because EBS volumes cannot be attached to multiple instances simultaneously.
Variation 4. A company is migrating a critical SAP system to AWS and needs to ensure high availability for the SAP Central Services (ASCS) and Enqueue Replication Server (ERS). Which AWS service can be used to manage the virtual IP address required for the SAP high availability setup?
Why C: Amazon Route 53 Application Recovery Controller (ARC) can manage routing and failover for SAP HA. Option A (Elastic Load Balancer) is for load balancing traffic, not virtual IP management. Option C (AWS Global Accelerator) provides static IP addresses but is not designed for SAP HA. Option D (AWS Transit Gateway) is for network connectivity.
Variation 5. A company is migrating an SAP system to AWS. They need to ensure high availability for the SAP Central Services (ASCS/ERS). Which THREE components are required for a highly available SAP ASCS/ERS setup on AWS? (Choose THREE.)
medium
✓ A.A cluster manager (e.g., Pacemaker)
B.An Application Load Balancer
C.Amazon Route 53 health checks
✓ D.Shared file system (e.g., Amazon FSx or EFS)
✓ E.Elastic IP address for the virtual IP
Why A: For HA SAP ASCS/ERS, you need a cluster (Option A), shared storage (Option B), and Elastic IP for VIP (Option D). Option C (ELB) is not used for ASCS/ERS. Option E (Route 53) is optional for DNS.
Variation 6. An organization is planning to migrate its SAP landscape to AWS and needs to ensure high availability for the SAP Central Services (ASCS) instance. Which TWO AWS services can be used to implement a high-availability architecture for ASCS?
medium
✓ A.Amazon EC2 Auto Recovery
B.Amazon CloudFront
C.AWS Database Migration Service (DMS)
D.Elastic Load Balancing (ELB)
✓ E.Amazon Route 53
Why A: Options A and B are correct. Amazon Route 53 can be used for DNS-level failover, and Amazon EC2 Auto Recovery can automatically restart an instance in case of failure. Option C is wrong because ELB is not typically used for ASCS. Option D is wrong because AWS DMS is a database migration service. Option E is wrong because Amazon CloudFront is a CDN.
Last reviewed: Jun 20, 2026
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