The answer is to enable synchronous replication mode in SAP HANA. This is correct because synchronous replication guarantees that a transaction is committed on both the primary and secondary instances before an acknowledgment is sent to the application, ensuring zero data loss (RPO=0) during a failover. For cross-AZ deployments using EBS volumes, this mode maintains perfect data consistency since the secondary always holds an identical copy of all committed data, making it the best practice for high availability. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of replication modes in the context of disaster recovery across AZs; a common trap is to confuse synchronous with synchronous in-memory mode, which does not persist data to disk on the secondary. Remember the memory tip: “Sync for zero, async for speed”—synchronous replication sacrifices a slight latency increase for absolute data safety.
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 administrator is setting up an SAP HANA system replication across two AWS Availability Zones (AZs). The primary and secondary instances use EBS volumes for data and log storage. What is the best practice for ensuring data consistency and minimizing data loss during a failover?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable synchronous replication mode in SAP HANA.
SAP HANA synchronous replication mode ensures that a transaction is committed on both the primary and secondary instances before an acknowledgment is sent to the application. This guarantees zero data loss (RPO=0) during a failover, because the secondary always has an identical copy of the committed data. For cross-AZ deployments, this is the best practice to maintain data consistency while still providing 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.
✗
Take frequent EBS snapshots of the primary volume and restore them on the secondary.
Why it's wrong here
Snapshots are not real-time and can lead to data loss.
✓
Enable synchronous replication mode in SAP HANA.
Why this is correct
Synchronous replication ensures data consistency and minimal data loss.
Clue confirmation
The clue words "best", "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use asynchronous replication mode for better performance.
Why it's wrong here
Asynchronous replication may cause data loss during failover.
✗
Configure the EBS volumes as Multi-Attach to allow both instances to access the same volume.
Why it's wrong here
Multi-Attach is not used for HANA system replication.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose asynchronous replication (Option C) because they mistakenly prioritize performance over data consistency, failing to recognize that SAP HANA synchronous replication is the only mode that guarantees zero data loss across AZs in a system replication configuration.
Detailed technical explanation
How to think about this question
SAP HANA synchronous replication uses log-based shipping where the primary sends redo log entries to the secondary and waits for a confirmation (sync acknowledgment) before committing the transaction. In a cross-AZ setup, network latency can increase commit times, so SAP recommends enabling 'full sync' mode (with 'logreplay' operation mode) to ensure the secondary applies logs immediately, maintaining a hot standby. The trade-off is higher write latency, but this is acceptable for critical SAP workloads where data loss is unacceptable.
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
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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: Enable synchronous replication mode in SAP HANA. — SAP HANA synchronous replication mode ensures that a transaction is committed on both the primary and secondary instances before an acknowledgment is sent to the application. This guarantees zero data loss (RPO=0) during a failover, because the secondary always has an identical copy of the committed data. For cross-AZ deployments, this is the best practice to maintain data consistency while still providing high availability.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best", "primary". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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