Authentic Nutanix Certification Exam NCP-BC-7.5 Questions Answers

Disaster recovery orchestration in the Nutanix environment often involves the pairing of two separate Availability Zones (AZs), each managed by its own Prism Central instance. For these two management planes to communicate, exchange metadata, and synchronize Protection Policies and Recovery Plans, specific firewall ports must be open between them.

Port 9440 is the standard port used for all Prism Central and Prism Element web interface and API traffic. During the AZ pairing process, the primary Prism Central must reach the recovery Prism Central ' s API to establish the trust relationship and pair the sites. Other ports mentioned, such as 2009 (Option A) and 2020 (Option B), are used for data replication between Controller VMs (CVMs) but are not used for the initial management-plane pairing between Prism Central instances. Port 2074 (Option C) is typically used for Nutanix Guest Tools (NGT) communication with the cluster. Therefore, ensuring port 9440 is open between the two Prism Central instances is a mandatory prerequisite for successful disaster recovery site pairing.

Nutanix Disaster Recovery offers several replication tiers to meet varying business Recovery Point Objectives (RPOs). NearSync replication is a specific technology designed to fill the gap between traditional Asynchronous replication and zero-RPO Synchronous replication.

NearSync replication supports a minimum RPO of 1 minute. It achieves this by using Lightweight Snapshots (LWS), which are highly efficient and can be taken much more frequently than standard full snapshots without causing significant I/O overhead on the system. While some versions of Nutanix software allow NearSync to reach RPOs as low as 20 seconds, the standard minimum RPO recognized in the context of the NCP-BC 7.5 evaluation for minutes-based intervals is 1 minute. Option A (0 RPO) is only achievable through Synchronous replication. Option C (15 minutes) is the typical maximum RPO for NearSync before it transitions to Async, and Option D (60 minutes) is the standard interval for Asynchronous replication. Understanding these thresholds is essential for administrators when designing protection policies for mission-critical workloads.

Disaster recovery success depends on the stability of the network link and the health of the services responsible for data replication. Nutanix Cluster Check (NCC) is the primary native health-monitoring tool for the Nutanix environment. NCC includes a comprehensive suite of checks specifically designed for Data Protection and BCDR.

During disaster recovery setup or testing, an administrator can run NCC to verify that the clusters are correctly paired, that remote site connectivity is functional, and that the required ports (such as 2009 and 2020) are open and reachable. Specific NCC checks like remote_site_connectivity_check or replication_health_check provide granular insights into whether the " handshake " between the primary and recovery sites is succeeding. While acli (Acropolis CLI) or ecli (Erasure Coding CLI) are used for managing VMs or storage disks, they do not provide the high-level diagnostic capabilities of NCC. By regularly running NCC, an administrator can proactively identify connectivity issues—such as firewall changes or routing failures—that could otherwise lead to replication failures and compromise the organization ' s recovery objectives.