PAS-C01 HANA System Replication (HSR) Practice Question
A company is designing a disaster recovery solution for SAP HANA on AWS using HANA System Replication. The primary site is in us-east-1 and the DR site is in us-west-2. Which component is required to enable replication across Regions?
⚠ Common exam trap
A common mistake is assuming that you need to copy data volumes via snapshots before starting HSR. In reality, HSR performs its own initial sync, so snapshots are unnecessary. Another trap is thinking VPC peering is sufficient, but it lacks the guaranteed performance needed for cross-region HSR.
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 Site-to-Site VPN or AWS Direct Connect between the two Regions
To enable HANA System Replication (HSR) across AWS Regions, a reliable, low-latency network connection is required. AWS Site-to-Site VPN or AWS Direct Connect provides a dedicated, secure network path that meets SAP's latency and stability requirements. The other options (VPC peering, automated EBS snapshots, Global Accelerator, S3 Transfer Acceleration) are not required for HSR; HSR performs its own initial data synchronization, and VPC peering does not guarantee the required performance for HANA replication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS Site-to-Site VPN or AWS Direct Connect between the two Regions
Why this is correct
Correct. Low-latency, reliable network connectivity between regions is essential for continuous log shipping and data synchronization in HSR. AWS Site-to-Site VPN or Direct Connect provides this.
- ✗
VPC peering between the two VPCs
Why it's wrong here
Incorrect. VPC peering, even inter-region, does not provide the dedicated, low-latency link required for HANA replication. It also uses the public internet in some cases and lacks SLA guarantees.
- ✗
Automated EBS snapshots of /hana/data and /hana/log volumes in us-east-1, copied to us-west-2
Why it's wrong here
Incorrect. HANA System Replication handles the initial data sync automatically when the secondary instance is started. Automated EBS snapshots are not required and are not part of the HSR replication process.
- ✗
AWS Global Accelerator
Why it's wrong here
Incorrect. AWS Global Accelerator improves application availability and performance by directing traffic over the AWS global network, but it is not a component of HANA System Replication.
- ✗
Amazon S3 Transfer Acceleration
Why it's wrong here
Incorrect. Amazon S3 Transfer Acceleration speeds up uploads to S3, but it is not applicable to HANA block-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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