PAS-C01 Technology Practice Question
A company is running an SAP HANA database on an EC2 instance with an EBS gp3 volume. The workload is write-intensive and latency-sensitive. Which configuration change would provide the most consistent I/O performance?
⚠ Common exam trap
It's easy for candidates to assume increasing volume size (Option C) will solve performance issues, but gp3's performance scales linearly with size only for throughput, not for IOPS consistency under sustained write loads, which is the key requirement for SAP HANA.
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 an EBS io2 Block Express volume with provisioned IOPS
An SAP HANA database is extremely sensitive to I/O latency and requires consistent, high IOPS for write-intensive workloads. EBS io2 Block Express volumes provide up to 256,000 provisioned IOPS with 99.999% durability, delivering the predictable low-latency performance that gp3 volumes cannot guarantee under sustained write pressure. This makes D the correct choice for consistent I/O performance.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Switch to an EBS st1 (throughput-optimized HDD) volume
Why it's wrong here
st1 is not suitable for latency-sensitive database workloads.
- ✗
Enable EBS Multi-Attach for the gp3 volume
Why it's wrong here
Multi-Attach is not supported for gp3 and is not designed for consistent I/O performance.
- ✗
Increase the size of the existing gp3 volume to increase baseline throughput
Why it's wrong here
Increasing size does not guarantee consistent latency for write-intensive workloads.
- ✓
Use an EBS io2 Block Express volume with provisioned IOPS
Why this is correct
io2 Block Express provides consistent low-latency and high IOPS for SAP HANA.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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