To release PostgreSQL HA instances using a dedicated subnet in Nutanix Database Service (NDB), the administrator must create a network profile that defines the subnet and its associated VLAN. Before creating this network profile, it is mandatory to add a VLAN to the NDB Networks configuration. This VLAN ensures that the dedicated subnet is recognized and manageable within NDB, allowing the HA instances to be provisioned with isolated network connectivity. The VLAN must be configured in the NDB Networks page to be available for selection during network profile creation.
Option A (The subnet in Prism Element must be IPAM configured) is incorrect because IP Address Management (IPAM) configuration in Prism Element is optional and not a mandatory prerequisite for creating a network profile in NDB.
Option B (The DB VMs must be registered first) is incorrect because VM registration is a subsequent step, not a prerequisite for network profile creation.
Option C (A VLAN must be added to NDB networks) is correct as it is a required step to define the network infrastructure before creating the profile.
Option D (Configure Network Segmentation) is incorrect because network segmentation is an advanced feature and not mandatory for basic network profile setup.
This ensures the dedicated subnet is properly integrated into NDB for HA provisioning.
References
Nutanix Database Service (NDB) User Guide, Chapter 3: Configuring an NDB Environment, Section: Configuring Network Profiles
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 3: Configure an NDB Environment
