PAS-C01 Design of SAP Workloads on AWS Practice Question
A company runs SAP on AWS with an Oracle database. They want to implement a disaster recovery strategy with a Recovery Point Objective (RPO) of less than 15 minutes and a Recovery Time Objective (RTO) of less than 2 hours. Which combination of AWS services should they use?
⚠ Common exam trap
AWS often tests the misconception that Oracle Data Guard is the only viable replication method for Oracle databases on AWS, but the question specifically requires an AWS-native solution that meets strict RPO/RTO targets without additional Oracle licensing costs.
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
✓
AWS Database Migration Service (DMS) for ongoing replication to a DR instance, and automated snapshots for fast recovery.
AWS DMS can perform ongoing replication from an Oracle source database to a target DR instance with minimal latency, enabling an RPO of less than 15 minutes. Automated snapshots of the DR instance allow fast recovery within the 2-hour RTO. This combination meets the stated RPO and RTO requirements without relying on Oracle-specific licensing or complex manual scripts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Oracle Data Guard for replication and Amazon Route 53 for DNS failover.
Why it's wrong here
Oracle Data Guard is a valid solution but it is not an AWS service; the question asks for AWS services.
- ✓
AWS Database Migration Service (DMS) for ongoing replication to a DR instance, and automated snapshots for fast recovery.
Why this is correct
AWS DMS with ongoing replication can achieve RPO <15 min, and automated snapshots allow recovery within RTO <2 hours.
- ✗
Amazon S3 cross-region replication for database files and a script to import them.
Why it's wrong here
S3 replication alone does not provide ongoing database replication with RPO <15 min.
- ✗
AWS Backup to take weekly snapshots and restore in the DR region.
Why it's wrong here
Weekly snapshots cannot achieve an RPO of less than 15 minutes.
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