PAS-C01 Technology Practice Question
An SAP application running on AWS is experiencing high latency for database write operations. The system uses SAP ASE on Amazon EC2 with gp2 EBS volumes. Which change is most likely to improve write performance?
⚠ Common exam trap
Candidates often assume gp3's higher baseline performance (3000 IOPS vs gp2's 100 IOPS baseline) is sufficient for all workloads, but they overlook that provisioned IOPS volumes are the only AWS block storage option that guarantees consistent performance for latency-sensitive database writes, especially under sustained load.
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
✓
Migrate to io1/io2 EBS volumes with provisioned IOPS.
SAP ASE on Amazon EC2 with gp2 EBS volumes is experiencing high latency for database write operations. gp2 volumes use a burst-bucket model that can exhaust IOPS credits under sustained heavy writes, causing throttled performance. Migrating to io1 or io2 EBS volumes with provisioned IOPS guarantees consistent, low-latency write throughput, which directly addresses the bottleneck for database write workloads.
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 database write logs to Amazon S3 for better throughput.
Why it's wrong here
S3 is object storage with higher latency; not suitable for database write logs.
- ✓
Migrate to io1/io2 EBS volumes with provisioned IOPS.
Why this is correct
Provisioned IOPS volumes are designed for consistent, low-latency database workloads.
- ✗
Migrate to gp3 EBS volumes with higher baseline performance.
Why it's wrong here
gp3 improves but does not guarantee provisioned IOPS for bursty writes.
- ✗
Use instance store volumes for database data files.
Why it's wrong here
Instance store is ephemeral and not durable; not suitable for database persistence.
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