The exhibit shows the "Create Snapshot" interface in NDB, where the administrator can select Nutanix clusters where the snapshot should be made available. However, only a single cluster appears despite multiple clusters in the environment. The most likely reason is that NDB Multi-cluster has not been enabled. Multi-cluster support in NDB requires explicit configuration to enable snapshot replication and data availability across remote clusters (e.g., via Prism Central and network profiles). Without this, NDB restricts snapshot operations to the local cluster where the database resides.
Other options are less likely:
A. The remote clusters are running ESXi: NDB supports ESXi clusters, so this alone wouldn’t limit visibility unless multi-cluster is disabled.
B. The snapshot will be too big to replicate to a remote cluster: Size is a consideration during replication, but it doesn’t prevent cluster visibility in the UI.
D. The remote clusters have an older version of AOS installed: Version compatibility might affect replication, but it wouldn’t hide clusters from the list unless multi-cluster setup is incomplete.
Thus, the verified answer is C, pointing to the need for multi-cluster configuration.
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: "Enabling Multi-Cluster Snapshot Replication" section.
