PAS-C01 Design of SAP Workloads on AWS Practice Question
An SAP system is running on AWS and uses Amazon EFS for the /sapmnt directory. The system is experiencing high latency during file operations. Which configuration change could improve the performance of the EFS file system?
⚠ Common exam trap
Many candidates assume General Purpose mode is always better for latency, but for highly concurrent SAP workloads, Max I/O mode's parallelism actually reduces overall latency despite higher metadata latency.
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
✓
Enable the Max I/O performance mode on the EFS file system.
The Max I/O performance mode is designed for highly parallel, throughput-intensive workloads like SAP /sapmnt, which involves many concurrent file operations. It scales to higher levels of aggregate throughput and IOPS by distributing data across multiple servers, reducing latency under heavy load. General Purpose mode, while suitable for latency-sensitive workloads, cannot match the parallel throughput capabilities required by SAP systems.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable the Max I/O performance mode on the EFS file system.
Why this is correct
Max I/O mode provides higher throughput for large-scale workloads.
- ✗
Change the performance mode from Max I/O to General Purpose.
Why it's wrong here
General Purpose is for latency-sensitive apps; Max I/O is better for throughput.
- ✗
Migrate the /sapmnt directory to an Amazon EBS volume.
Why it's wrong here
EBS cannot be shared across multiple instances, which is required for /sapmnt.
- ✗
Increase the provisioned throughput of the EFS file system.
Why it's wrong here
Provisioned throughput increases cost but latency may still be high due to I/O operations.
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