PAS-C01 Design of SAP Workloads on AWS Practice Question
A company is running SAP S/4HANA on AWS. They are experiencing high read latency on their EBS volumes used for /usr/sap. Which of the following is the MOST effective way to improve read performance?
⚠ Common exam trap
A common mix-up: candidates confuse throughput improvements (gp3 or RAID 0) with latency reduction, but the question specifically targets read latency, which requires a volume type designed for consistent low-latency performance like io2 Block Express.
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
✓
Use io2 Block Express volumes with provisioned IOPS.
The io2 Block Express volume type provides the highest durability and consistent low-latency performance for SAP workloads, with up to 256,000 provisioned IOPS per volume. For /usr/sap, which is sensitive to read latency due to frequent binary and configuration file access, io2 Block Express ensures predictable sub-millisecond latency even under high I/O demand, directly addressing the high read latency issue.
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 io2 Block Express volumes with provisioned IOPS.
Why this is correct
io2 Block Express provides consistent low latency.
- ✗
Change the volume type to gp3 with higher throughput.
Why it's wrong here
gp3 is not optimized for low latency.
- ✗
Move to a larger instance type with more network bandwidth.
Why it's wrong here
Instance size does not directly reduce EBS latency.
- ✗
Configure RAID 0 across multiple volumes.
Why it's wrong here
RAID0 improves throughput, not latency.
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