PAS-C01 · Question #109
A company wants to run SAP HANA on AWS in the eu-central-1 Region. The company must make the SAP HANA system highly available by using SAP HANA system replication. In addition, the company must create
The correct answer is B. Install the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier E. Install the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier. SAP HANA multi-tier system replication chains three systems: Tier 1 (primary), Tier 2 (local HA secondary), and Tier 3 (DR secondary). The key constraint is replication mode relative to latency: SYNC replication requires round-trip latency below 1 ms to avoid application performa
Question
A company wants to run SAP HANA on AWS in the eu-central-1 Region. The company must make the SAP HANA system highly available by using SAP HANA system replication. In addition, the company must create a disaster recovery (DR) solution that uses SAP HANA system replication in the eu-west-1 Region. As prerequisites, the company has confirmed that Inter-AZ latency is less than 1 ms and that Inter-Region latency is greater than 1 ms. Which solutions will meet these requirements? (Choose two.)
Options
- AInstall the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier
- BInstall the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier
- CInstall the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier
- DInstall the tier 1 primary system in eu-central-1. Install the tier 2 secondary system and the DR tier
- EInstall the tier 1 primary system and the tier 2 secondary system in eu-central-1. Configure the tier
How the community answered
(47 responses)- A6% (3)
- B74% (35)
- C15% (7)
- D4% (2)
Explanation
SAP HANA multi-tier system replication chains three systems: Tier 1 (primary), Tier 2 (local HA secondary), and Tier 3 (DR secondary). The key constraint is replication mode relative to latency: SYNC replication requires round-trip latency below 1 ms to avoid application performance degradation - this is satisfied within eu-central-1 across AZs (confirmed <1 ms). ASYNC or logreplay replication is required for cross-Region replication because inter-Region latency exceeds 1 ms. Option B installs Tier 1 and Tier 2 in eu-central-1 using SYNC replication (correct for <1 ms AZ latency) and Tier 3 in eu-west-1 using ASYNC or logreplay replication (correct for >1 ms cross-Region latency). Option E similarly satisfies both constraints with an appropriate configuration of the multi-tier chain. Options using SYNC mode for the cross-Region link (eu-west-1) would degrade application performance due to the higher latency and are therefore incorrect.
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