When creating a Network Profile for NDB HA VMs (e.g., NDB API and Repository VMs) spread across three Nutanix clusters, the required type is PostgreSQL HA instance managed outside NDB. NDB HA relies on a PostgreSQL database for its control plane, and in a multi-cluster HA setup, this PostgreSQL instance must be configured for high availability (e.g., using streaming replication) outside NDB’s management. The Network Profile must support this external HA instance’s networking requirements (e.g., VLANs, IP ranges) to ensure connectivity across clusters.
Other options are incorrect:
A. PostgreSQL HA instance managed in NDB: NDB manages database instances, not its own HA control plane database.
B. PostgreSQL single instance managed in NDB: A single instance lacks HA, unsuitable for multi-cluster.
D. PostgreSQL single instance managed outside NDB: Lacks HA, insufficient for NDB HA VMs.
Thus, the verified answer is C, aligning with NDB HA architecture.
Official Nutanix Database Automation References
Nutanix Database Management & Automation (NDMA) course, Module 4: High Availability and Disaster Recovery, Lesson 4.2: Configuring Multi-Cluster HA.
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 4: Troubleshoot NDB Solutions, Objective 4.3: Configure HA Across Clusters (applicable to v7.5).
Nutanix NDB Administration Guide: "Network Profile Configuration for HA VMs" section.
