Nutanix NCS-Core Practice Test - Questions Answers, Page 22

For creating a Disaster Recovery Test plan for Nutanix environments, verifying that VMs receive the correct IP address after a failover is critical to validate VM availability across the network. This check is essential to ensure that network configurations and DHCP/Static IP settings are correctly applied post-failover, enabling proper network communications and access to services hosted on the VMs. Ensuring correct IP addressing is fundamental to the successful operation of DR strategies in virtualized environments.

Reference: Nutanix Disaster Recovery Best Practices, Nutanix Network Configuration for DR environments.

Addressing the customer's concern regarding the potential storage performance impact after a VM migration, it's important to note that Nutanix AHV includes intelligent scheduling mechanisms. AHV's built-in scheduler automatically works to restore data locality after VM migrations. Data locality refers to the placement of data close to the VM consuming it, which optimizes read and write operations by reducing latency. After migration, the scheduler actively moves data to ensure it is close to its consuming VM, thereby minimizing any adverse impacts on storage performance.

Nutanix AHV Administration Guide: Nutanix Documentation

Nutanix Data Locality Explanation and Benefits: Nutanix Portal

To foundation a cluster using ESXi as the hypervisor, the necessary components include:

ISO image for ESXi: This is required to install ESXi on the nodes within the cluster.

iso_whitelist.json: This file is crucial for the Foundation process as it lists the supported ISO images and their checksums to ensure the integrity and compatibility of the hypervisor ISO being used.

Nutanix Bible (https://www.nutanixbible.com), specifically sections discussing hypervisor installation and compatibility.

Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), covering Foundation processes and required files.

Given the symptoms where two nodes correctly failover but lose communication with the third node after an SFP+ is removed, the first action should be to:

Validate the SFP+ is fully plugged into the node and switch: This is critical because a loose or partially connected SFP+ can cause intermittent network issues, which seems to be the problem based on the scenario described.

Nutanix Bible (https://www.nutanixbible.com), particularly the network troubleshooting sections.

Nutanix Field Installation Guide, which provides detailed steps on how to ensure hardware components like SFPs are correctly installed.

To verify that all in-scope tasks for a new cluster deployment have been completed, the consultant should refer to the:

Deployment Checklist: This document typically lists all tasks required for a successful deployment, making it a suitable tool for ensuring that nothing has been overlooked.

Nutanix Bible (https://www.nutanixbible.com), where the importance of deployment documentation is discussed.

Nutanix Deployment Guide, which includes detailed checklists for ensuring thorough project completion.

If a VM deployed on the storage network cannot access a SMB standard share, the likely issue is that:

Clients on the same subnet as the storage network cannot access the shares: This scenario typically occurs due to network segmentation policies or firewall rules that restrict access to the storage network from clients within the same subnet, intended to segregate traffic types for security and performance reasons.

Nutanix Bible (https://www.nutanixbible.com), specifically sections on network segmentation and Nutanix Files configurations.

Nutanix Technical Documentation on Nutanix Files, which covers network configuration and troubleshooting issues related to file access.

When using the Nutanix cluster As Built Document generator, the necessary configuration elements to provide when running the run_as_built.exe command include the Cluster IP (B) and the Customer Name (D). The Cluster IP is required to properly identify and communicate with the cluster to gather configuration and operational data. The Customer Name is typically used to personalize the documentation, making it specific to the client's deployment, which is useful for record-keeping and future reference purposes.

Reference: Nutanix As Built Documentation generator usage guidelines, Nutanix Best Practices for Documentation.

As the consultant concludes the project, to assist the customer with repeating the deployment process at a dark site, the best items to deliver would be:

A trial license activation code for Prism Starter, which will allow the customer to begin using the Nutanix cluster immediately without initial extra costs.

Creating an account for access to the Nutanix Support Portal, ensuring the customer can access support and documentation as needed for troubleshooting and learning.

A guide for dark site deployments using Nutanix standards, which will provide step-by-step instructions tailored to the specific challenges of deploying in a location with no direct internet connectivity. These resources are critical for enabling the customer to independently deploy and manage Nutanix clusters under the unique constraints of a dark site.

Reference: Nutanix Deployment Guide, Nutanix Support Portal Documentation.

Considering the equipment setup with one Out-of-Band Management (OOBM) Ethernet switch and two 10GbE SFP+ Top of Rack (ToR) switches, the consultant should recommend six DAC (Direct Attach Cable) 10GbE cables and three Ethernet cables. The DAC 10GbE cables are suitable for connecting the nodes to the ToR switches to handle high-speed data transfers, while the Ethernet cables are necessary for connections related to management purposes, such as connecting to the OOBM switch for remote management tasks. This recommendation ensures adequate connectivity for both data and management networks.

Reference: Nutanix Hardware and Installation Guide, Best Practices for Network Cable Management.