An administrator needs to create a Network Profile for NDB HA VMs spread across three Nutanix clusters. What type of Network Profile is required for NDB API and Repository VMs?

For an HA deployment of Nutanix Database Service (NDB), the three API/Repository VMs run a PostgreSQL streaming-replication cluster that NDB itself must not manage. Deployment documentation therefore mandates selecting a “PostgreSQL HA instance (Managed outside NDB)” network profile so the VMs can obtain IP addresses on all participating clusters while keeping the metadata database external to NDB control.

A. NDB cannot manage the PostgreSQL database that holds its own metadata, so “managed in NDB” is disallowed for HA.
B. Single-instance PostgreSQL provides no redundancy and is unsupported for an HA control-plane.
D. Although “managed outside” is correct, a single instance lacks the mandatory HA replication set.

1. Nutanix Database Service Deployment Guide 2.5, “NDB HA Deployment > Repository Configuration”, bullet “PostgreSQL HA instance (Managed outside NDB)” (doc ID NDB-DEP-2.5, p.17).

2. Nutanix Database Service Administration Guide 2.4, §3.2 “Limitations of internal Postgres management for NDB HA”.

3. Nutanix NCP-DB Curriculum, Module “Control-plane HA”, slide 12.