PAS-C01 Migration Practice Question
A retail company is migrating its SAP ERP system from on-premises to AWS. The system includes an SAP HANA database (2 TB) and an SAP NetWeaver application server. The migration strategy is to use SAP HANA System Replication (HSR) to replicate the database to an EC2 instance running SAP HANA, then perform a takeover. The application server will be migrated using AWS Application Migration Service (MGN). The network connection is AWS Direct Connect with 1 Gbps bandwidth. During a test migration, the HSR replication is working, but the application server replication through MGN is taking much longer than expected. The MGN console shows that the data replication progress is stuck at 45% for several hours. The source server is a physical server with a 500 GB disk, 75% utilized. Which action is most likely to resolve the issue?
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
✓
Increase the disk queue depth on the source server or add additional disks to improve I/O performance.
The MGN data replication process is stuck at 45%, indicating a source disk I/O bottleneck. This often occurs when the source server's disk queue depth is insufficient to keep up with the rate of change. Increasing the disk queue depth (option A) can improve I/O performance and resolve the stall. Option B is incorrect because converting to dynamic disks does not address I/O throughput; MGN works with static disks. Option C is incorrect because increasing the staging area size would not help if the issue is I/O; the staging area is used for caching changes, but the problem is the source disk cannot read/write fast enough. Option D is incorrect because increasing Direct Connect bandwidth would not affect source I/O performance; the bottleneck is local to the source server.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Increase the disk queue depth on the source server or add additional disks to improve I/O performance.
Why this is correct
Increasing the disk queue depth (option A) can improve I/O performance and resolve the stall, as the MGN data replication process is stuck at 45% due to a source disk I/O bottleneck.
- ✗
Convert the source disks to dynamic disks to improve replication speed.
Why it's wrong here
Converting to dynamic disks does not address I/O throughput; MGN works with static disks.
- ✗
Increase the staging area size in the MGN replication settings.
Why it's wrong here
Increasing the staging area size would not help if the issue is I/O; the staging area is used for caching changes, but the problem is the source disk cannot read/write fast enough.
- ✗
Increase the Direct Connect bandwidth to 10 Gbps.
Why it's wrong here
Increasing Direct Connect bandwidth would not affect source I/O performance; the bottleneck is local to the source server.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.