Nutanix NCP-DB Exam Dumps - Actual Questions Answers

Nutanix NDB provides the ability to create highly-available (HA) database pairs, leveraging replication and failover across clusters. The two databases explicitly supported for HA pairs in NDB are PostgreSQL and SQL Server. NDB orchestrates HA for PostgreSQL using streaming replication and for SQL Server using Always On Availability Groups or Failover Cluster Instances, ensuring data redundancy and failover capabilities across Nutanix clusters.

Other options are not supported for HA pairs:

A. MySQL: MySQL is supported by NDB but lacks native HA pair configuration.

D. MariaDB: Similar to MySQL, MariaDB is managed by NDB but does not support HA pairs.

Thus, the verified answers are B and C, reflecting NDB’s HA capabilities.

Official Nutanix Database Automation References

Nutanix Database Management & Automation (NDMA) course, Module 4: High Availability and Disaster Recovery, Lesson 4.1: Configuring HA for Databases.

Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 4: Troubleshoot NDB Solutions, Objective 4.1: Configure HA for Supported Databases (applicable to v7.5).

Nutanix NDB Administration Guide: "High Availability Supported Databases" section.

The first NDB management-plane VM on an AHV-based Nutanix cluster is deployed from the NDB QCOW2 disk image. The administrator downloads the QCOW2 image from the Nutanix Support portal, configures it through the Prism Element Image Service, and then creates the NDB VM from that image. QCOW2 is the appropriate virtual-disk format for AHV because AHV uses the KVM virtualization stack. VMDK is principally associated with VMware virtual disks, VHDX is used by Microsoft Hyper-V, and VDI is associated primarily with Oracle VirtualBox. Those formats are not used for the initial NDB VM deployment on a dedicated AHV cluster. Consequently, option C is correct. The VM must subsequently receive the required compute, network, and static-IP configuration before NDB initial setup is completed. NDB User Guide—Installing NDB on AHV

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In this scenario, a PostgreSQL instance managed by NDB on a Linux VM is malfunctioning after a manual OS update, and a new Linux DB server VM has been prepared to host the data. To migrate the data to the new VM, the administrator must integrate the new VM into NDB’s management framework. The correct action is to register the new DB Server VM in NDB, which allows NDB to recognize and manage the VM as a database server. Once registered, the administrator can use NDB’s features (e.g., cloning, restoring, or reprovisioning) to migrate the data from the broken instance to the new VM.

Here’s why the other options are incorrect:

A. Provision a new PostgreSQL instance from the Databases page: This creates a fresh instance without migrating existing data, losing the broken instance’s data unless separately restored.

B. From The Machine policy, Authorize Database Server VMs: Machine policies in NDB define rules for VM management, but authorizing VMs is not a direct migration action and assumes prior registration.

C. Follow the Provision a PostgreSQL Instance wizard: Similar to A, this provisions a new instance rather than migrating data to an existing prepared VM.

Registering the new VM in NDB (via the "Database Server VMs" section) enables the administrator to associate it with the existing PostgreSQL instance’s configuration and perform a data migration (e.g., using a snapshot or backup). This aligns with NDB’s workflow for replacing a broken server. Thus, the verified answer is D.

Official Nutanix Database Automation References

Nutanix Database Management & Automation (NDMA) course, Module 3: Managing Database Instances, Lesson 3.3: Registering and Managing Database Server VMs.

Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 3: Manage NDB Solutions, Objective 3.2: Register and Manage DB Server VMs (applicable to v7.5).

Nutanix NDB Administration Guide: "Registering a Database Server VM" section.