PAS-C01 Migration Practice Question
A global company is migrating its SAP ERP system to AWS. The system runs SAP ECC on IBM AIX with Oracle Database. The company plans to move to SAP S/4HANA on AWS. The source system is 5 TB in size. The network bandwidth between the on-premises data center and AWS is 100 Mbps. The migration must be completed within a 2-week window with minimal downtime. The company has a SAP license that allows running S/4HANA on certified hardware. They have already used AWS SCT to convert the database schema to SAP HANA-compatible format. They now need to execute the data migration. The team is considering the following options:
Option A: Use AWS DMS with ongoing replication from Oracle to HANA, then perform a final cutover. Option B: Use AWS Snowball Edge to transfer the Oracle backup files to AWS, then restore to HANA. Option C: Use AWS DataSync to copy the Oracle data files to Amazon EFS, then import into HANA. Option D: Use SAP HANA system replication from the source Oracle database to the target HANA database.
Which option is the most feasible and efficient for this migration?
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 AWS DMS with ongoing replication from Oracle to HANA, then perform a final cutover
The most feasible because AWS DMS supports heterogeneous migrations from Oracle to SAP HANA, and the ongoing replication capability minimizes downtime during the cutover. Option A (SAP HANA system replication) is incorrect because it requires the source database to already be SAP HANA, not Oracle. Option B (Snowball Edge) is inefficient for this scenario because restoring from backup files does not provide ongoing replication, and the 2-week window with minimal downtime would be difficult to achieve. Option C (DataSync to EFS) is designed for file transfers, not database migration, and importing into HANA would require additional complex steps. The schema conversion has already been done with AWS SCT, so DMS can handle the data migration efficiently.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use SAP HANA system replication from the source Oracle database to the target HANA database
Why it's wrong here
HANA system replication requires both source and target to be HANA databases.
- ✗
Use AWS Snowball Edge to transfer the Oracle backup files to AWS, then restore to HANA
Why it's wrong here
Using AWS Snowball Edge for Oracle backup files is unsuitable because restoring Oracle backups directly into a SAP HANA database is technically impossible; HANA requires data loading into its own format. Furthermore, this method implies a full offline migration, which contradicts the "minimal downtime" requirement for the 2-week window. Snowball Edge is primarily designed for efficient, large-scale physical data transfer when network bandwidth is insufficient, making it ideal for initial bulk data seeding or migrating homogenous databases where direct backup restoration is feasible.
- ✗
Use AWS DataSync to copy the Oracle data files to Amazon EFS, then import into HANA
Why it's wrong here
DataSync is for file-level transfer, not database migration.
- ✓
Use AWS DMS with ongoing replication from Oracle to HANA, then perform a final cutover
Why this is correct
DMS supports heterogeneous migrations and ongoing replication to minimize downtime.
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