Pass the Nutanix Nutanix SE Academy NCSE-Core Questions and answers with CertsForce

Three valid configuration scenarios for deploying Prism Central include:

Environments use Network Address Translation (NAT): Prism Central can be deployed in environments where NAT is used to manage network addresses.

Prism Elements and Prism Central are in different subnets: It is possible to configure Prism Central and Prism Elements in different subnets as long as network connectivity is maintained.

Environments do not have Internet access: Prism Central can be deployed and operated in environments that do not have direct Internet access, relying instead on internal network configurations and management​​.

A prospect is looking for a Nutanix solution for a mission-critical application that needs to sustain two simultaneous node outages and prefers the cluster to fully rebuild both data and metadata in the event of hardware issues. Here is the detailed explanation:

Requirement Analysis:

Sustain two simultaneous node outages.

Fully rebuild both data and metadata after hardware issues.

Feature Analysis:

Nutanix clusters use Replication Factor (RF) to ensure data protection and availability. For RF3 (Replication Factor 3), which protects against two simultaneous node failures, a minimum of 5 nodes is required.

To fully rebuild both data and metadata after failures, the system needs an additional node to ensure there is enough redundancy and performance.

Conclusion:To achieve RF3 and sustain two simultaneous node failures while allowing full rebuild of data and metadata, a minimum of 6 nodes is required.

References:

Nutanix documentation on cluster resiliency and RF configurations​

Scenario Analysis:

The VM is protected with NearSync Replication, scheduled every 15 minutes, but misses the replication window during nightly backups due to high write volumes.

Expected Behavior:

Option B: Protection Domain transitions back to hourly schedule:

NearSync automatically falls back to a less frequent replication schedule, such as hourly, when it cannot keep up with the 15-minute schedule due to write volume or other issues.

Option D: The system continuously tries to get to the NearSync schedule:

The system does not give up on the NearSync schedule. Instead, it keeps attempting to return to the 15-minute interval as soon as conditions allow (e.g., write volume decreases)​​.

Behavior Explanation:

Hourly Schedule Transition:

When the high write volume prevents the 15-minute replication, NearSync transitions to an hourly schedule to ensure that replication continues, albeit at a reduced frequency.

Continuous Attempt to Return to NearSync:

The system monitors conditions and makes continuous efforts to revert to the NearSync schedule as soon as it becomes feasible.

Conclusion:

The correct options that describe the expected behavior are B and D.

References: Nutanix Bible explanation of NearSync behavior under high write volumes and missed replication windows.

To determine the minimum amount of HDD capacity required for the workload after converting thick provisioned disks to thin provisioned disks, we need to consider the active working set and the typical overhead for thin provisioning.

Current Capacity:

The prospect currently has 8500GB (8.5TiB) of provisioned capacity.

Active Working Set:

The total active working set for the cluster is determined to be 1TB.

Thin Provisioning:

Thin provisioning reduces the need for physical storage because it allocates storage on-demand rather than reserving the full capacity upfront.

Nutanix typically advises planning for additional overhead to accommodate metadata, snapshots, and potential growth.

Calculation:

The rule of thumb for thin provisioning overhead is approximately 2-3 times the active working set to ensure adequate capacity for metadata and additional data growth.

Using the higher end of the multiplier (3 times):

1TB (active working set)×3=3TB1 \text{TB (active working set)} \times 3 = 3 \text{TB}1TB (active working set)×3=3TB

Conclusion:

Therefore, the minimum HDD capacity required for the workload when thin provisioning is applied would be around 3.0TiB.

References:

Nutanix Sizing Guidelines.

Nutanix Documentation on Thin Provisioning and Storage Optimization.

When addressing the prospect's need to refresh their environment with a small budget, it is crucial to highlight Nutanix's capabilities that can efficiently utilize their resources and manage their widespread satellite offices. The core data center's low utilization indicates room for improvement in resource management and cost-effectiveness. Here's a detailed explanation of the selected capabilities:

A. Multi-site management:

Nutanix Prism Central allows centralized management of multiple sites, including satellite offices. This capability is essential for managing infrastructure across the prospect's 25 satellite offices efficiently.

Centralized management reduces the complexity and operational overhead associated with maintaining multiple disparate systems. This leads to better resource utilization and easier scalability.

Document Purpose:

AReference Architectureprovides a comprehensive framework for designing, implementing, and managing a solution. It includes validated configurations, best practices, and deployment guidelines tailored to specific applications or workloads.

Suitability for Avaya IP Office Migration:

This type of document is ideal for addressing concerns about the suitability and design of using Nutanix for Avaya IP Office migration as it includes detailed technical guidance and architecture designs that ensure compatibility and performance (Nutanix Bible, Architecture Overview section)​​.

Conclusion:

Providing a Reference Architecture will address the prospect’s concerns with a detailed, validated approach for deploying Avaya IP Office on Nutanix, ensuring a reliable and efficient migration.

References:

Nutanix Reference Architecture documents

Nutanix Bible on Architecture Overview

Customer Concern:

The customer is concerned about having a single-pane-of-glass management interface being a single-point-of-failure.

Nutanix Prism Architecture:

Prism: The management interface for Nutanix clusters, designed to run on every Controller VM (CVM) in the cluster.

Explanation:

Distributed Architecture: Prism is not a single-point-of-failure because it runs on every CVM within the cluster.

High Availability: If one CVM fails, Prism services continue to operate on the remaining CVMs, ensuring continuous management availability.

Outcome:

The distributed nature of Prism running on every CVM mitigates the risk of a single-point-of-failure, addressing the customer's concern effectively.

References: For more details, refer to Nutanix documentation on Prism architecture and high availability features.

A. Self-healing infrastructure:

Nutanix provides a self-healing infrastructure that automatically detects and recovers from hardware failures, minimizing the need for on-site intervention. This is crucial for retail locations where on-site staff may not be qualified to handle hardware issues.

C. Prism Central:

Prism Central allows for centralized management of multiple Nutanix clusters across different locations. This simplifies management and reduces operational complexity, especially for environments with numerous sites like the 100 retail locations.

References:

Nutanix Prism documentation and self-healing infrastructure features provide detailed information on how these capabilities simplify management and enhance reliability for distributed environments

To configure alerts to notify the administrator before VM CPU utilization hits 90%, follow these steps:

Open the Health dashboard in the Prism web console.

Locate the VM CPU Check alert configuration.

Adjust the alert threshold to a value below 90%, such as 80% or 85%.

Save the changes to ensure that the alert will trigger when VM CPU utilization reaches the newly set threshold.

By lowering the alert threshold, the administrator will receive notifications before CPU utilization becomes critical, allowing for proactive management and mitigation of potential performance issues.

References:

Nutanix Prism Web Console Guide

Nutanix Health Dashboard Documentation

In Nutanix Files (formerly known as Acropolis File Services or AFS) 3.5, home shares require a multi-FSVM deployment to function correctly. A single FSVM deployment does not support the configuration of home shares.

Single FSVM Limitation: A single FSVM deployment lacks the necessary redundancy and performance capabilities required for supporting home shares. Home shares require multiple FSVMs to provide high availability and load balancing, which is essential for managing user home directories effectively.

Home Shares Configuration: Home shares are designed to distribute user data across multiple nodes to ensure availability and performance. This distribution requires at least three FSVMs in a typical deployment setup.

Troubleshooting: When home shares cannot be configured, one of the first checks is to ensure that the deployment consists of the required number of FSVMs. In this case, the deployment having only a single FSVM directly explains the issue.

References:

Nutanix Bible, Section on File Services and Multi-FSVM requirements​​.

Nutanix-NDB-User-Guide, Network Requirements for Nutanix File Deployments​​.