The answer is to increase the provisioned IOPS on the EBS volumes to 10000. This directly resolves the SAP HANA EBS IOPS bottleneck because the CloudWatch metrics—read latency consistently above 10 ms and a queue length peaking at 20—are classic signs of IOPS throttling, where the volume cannot keep up with the database’s I/O demand. By doubling the provisioned IOPS, you reduce queue depth and latency, allowing SAP HANA’s write-ahead log and data volume operations to proceed without queuing. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your ability to distinguish between IOPS bottlenecks and other performance issues like network latency or instance type limits; a common trap is to suggest moving to instance store volumes, but those are ephemeral and unsuitable for persistent SAP HANA data. Remember the memory tip: “Queue length over 10? IOPS need a pen.”—a high queue length almost always signals insufficient IOPS, not network or CPU constraints.
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. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 runs SAP S/4HANA on AWS with a single-instance deployment. The database is hosted on an r5.8xlarge instance with 5000 provisioned IOPS EBS volumes. Recently, the system experienced a performance degradation during peak hours. CloudWatch metrics show that the EBS volume read latency is consistently above 10 ms, and the queue length is frequently peaking at 20. The instance is in the same Availability Zone as the EBS volumes. What should the administrator do to resolve the performance issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Increase the provisioned IOPS on the EBS volumes to 10000.
The correct answer is B. The CloudWatch metrics show high read latency (>10 ms) and a queue length peaking at 20, which indicates that the EBS volume is throttling due to insufficient IOPS for the workload. Increasing provisioned IOPS from 5000 to 10000 directly addresses the bottleneck by allowing more I/O operations per second, reducing queue depth and latency. Since the instance and volumes are in the same Availability Zone, network latency is not a factor, and instance store volumes are ephemeral and unsuitable for persistent SAP HANA data.
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.
✗
Move the instance to a different Availability Zone to reduce network latency.
Why it's wrong here
Instance and EBS are already in same AZ; moving AZ would not help EBS latency.
✓
Increase the provisioned IOPS on the EBS volumes to 10000.
Why this is correct
Higher IOPS reduces latency and queue depth, improving performance.
Related concept
Read the scenario before looking for a memorised answer.
✗
Move the database to an instance with instance store volumes for better performance.
Why it's wrong here
Instance store is ephemeral and not suitable for persistent database storage.
✗
Migrate the EBS volumes to gp3 volume type with baseline performance.
Why it's wrong here
gp3 may not meet the required IOPS; io1/io2 with higher IOPS is needed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume high latency is due to network distance (Option A) or that gp3 volumes always provide better performance (Option D), but the key metric is queue length, which directly points to IOPS exhaustion on the provisioned IOPS volume.
Detailed technical explanation
How to think about this question
EBS io1/io2 volumes use a credit-based I/O throttling mechanism; when the queue length exceeds 1 per volume (or per instance EBS bandwidth), the volume enters a throttled state, causing latency spikes. The queue length of 20 indicates that the volume is saturated and requests are backing up, which directly correlates to insufficient provisioned IOPS. Increasing IOPS raises the volume's I/O credit balance, allowing it to handle the burst demand without throttling, and the 10 ms latency threshold is a common indicator of EBS queueing delays rather than network or storage hardware issues.
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: Increase the provisioned IOPS on the EBS volumes to 10000. — The correct answer is B. The CloudWatch metrics show high read latency (>10 ms) and a queue length peaking at 20, which indicates that the EBS volume is throttling due to insufficient IOPS for the workload. Increasing provisioned IOPS from 5000 to 10000 directly addresses the bottleneck by allowing more I/O operations per second, reducing queue depth and latency. Since the instance and volumes are in the same Availability Zone, network latency is not a factor, and instance store volumes are ephemeral and unsuitable for persistent SAP HANA data.
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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