PAS-C01 Technology Practice Question
An SAP system running on AWS is experiencing performance degradation. The system uses a shared file system for /sapmnt and /usr/sap/trans. The file system is hosted on an Amazon EFS file system. Which configuration change is most likely to improve throughput for these file systems?
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
✓
Change the EFS performance mode to Max I/O to support higher levels of aggregate throughput and operations per second.
Amazon EFS Max I/O performance mode is designed for workloads with high throughput and parallel operations, such as SAP shared file systems for /sapmnt and /usr/sap/trans. Option B (Provisioned Throughput) provides consistent throughput but is not specifically optimized for parallel access and may incur additional cost. Option C (General Purpose Burstable) is the default mode, which is suitable for lower throughput workloads and would not improve performance. Option D (Enable burst credits) is not a configurable option; EFS automatically uses burst credits when in Burstable mode, so enabling them is not applicable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Change the EFS performance mode to Max I/O to support higher levels of aggregate throughput and operations per second.
Why this is correct
Max I/O mode is designed for large-scale, parallel workloads like SAP shared directories.
- ✗
Increase the Provisioned Throughput of the EFS file system.
Why it's wrong here
Provisioned Throughput is an option for consistent throughput but not the default recommendation; Max I/O mode handles high parallel access better.
- ✗
Switch the EFS file system to General Purpose (Burstable) performance mode.
Why it's wrong here
General Purpose mode is not optimized for high throughput; it is suitable for latency-sensitive workloads.
- ✗
Enable burst credits on the EFS file system to handle peak loads.
Why it's wrong here
Burst credits are part of the General Purpose mode; they are not a separate configuration.
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