PAS-C01 Technology Practice Question
A company is designing a disaster recovery (DR) strategy for its SAP HANA database on AWS. The primary site is in us-east-1, and the DR site is in us-west-2. Which TWO actions are required to enable HANA System Replication (HSR) across AWS Regions? (Choose 2)
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
✓
Set up a VPN or Direct Connect connection between the Regions for secure, low-latency communication.
Options B and C are correct. Option B is correct because HSR requires low-latency network connectivity between the primary and DR sites, which can be provided by VPN or Direct Connect. Option C is correct because for cross-region HSR, asynchronous replication mode is required since synchronous replication would introduce unacceptable latency over long distances. Option A is incorrect because EBS snapshots are not used for HSR; HSR uses log replication. Option D is incorrect because S3 Cross-Region Replication is not used for HANA data files; HSR replicates log volumes. Option E is incorrect because HSR is a database-level replication, not an application-level load balancer.
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 cross-Region replication of EBS snapshots.
Why it's wrong here
Incorrect. HSR uses log replication, not EBS snapshot replication.
- ✓
Set up a VPN or Direct Connect connection between the Regions for secure, low-latency communication.
Why this is correct
Correct. Low-latency network connectivity is needed for HSR.
- ✓
Configure HSR with asynchronous replication mode.
Why this is correct
Correct. Asynchronous replication is necessary across Regions to avoid latency issues.
- ✗
Use S3 Cross-Region Replication to copy HANA data files.
Why it's wrong here
Incorrect. S3 CRR is not used; HSR replicates log volumes directly.
- ✗
Deploy an Application Load Balancer in front of the HANA instances in both Regions.
Why it's wrong here
Incorrect. ALB is not involved in HSR; it's a database-level replication.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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