NCP-EUC Exam Dumps - Nutanix Certified Professional - End User Computing (NCP-EUC) 6.10 Exam

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:

According to Nutanix storage best practices for Virtual Desktop Infrastructure (VDI), the optimal configuration for Linked Clones is Compression Only.

Linked Clones and Data Efficiency: In a Linked Clone environment, the Virtual Machines (VMs) already share a common base image (replica disk) at the hypervisor level. Because the identical operating system data is already shared via the cloning technology, the Nutanix Distributed Storage Fabric (DSF) manages this duplicate data efficiently without needing the Deduplication feature enabled on the container.

Redundancy of Deduplication: Nutanix technical documentation explicitly states that for Linked Clones or Nutanix VAAI clones, deduplication provides no additional benefit because the data is already single-instanced. Enabling deduplication in this scenario would introduce unnecessary metadata overhead without delivering significant capacity savings.

Role of Compression: Inline Compression is recommended for almost all workloads, including VDI. It effectively reduces the size of the unique data written to the delta disks (user data, temp files, and logs) associated with non-persistent desktops, maximizing storage efficiency without the performance cost of deduplication.

Shadow Clones: For the read-heavy workload of 2000 desktops accessing the same base image, Nutanix utilizes Shadow Clones (enabled by default) to cache the "hot" replica disk locally on every node, ensuring high performance during boot storms, rendering the need for "performance tier deduplication" redundant for linked clones.

Summary of Best Practice:

Full Clones / Persistent Desktops: Compression + Deduplication.

Linked Clones / Non-Persistent Desktops: Compression Only.

Writable AppVolumes are a feature of VMware App Volumes that provides users with a dedicated virtual disk for storing user profile data and user-installed applications1. Writable AppVolumes are stored as VMDK files on a datastore2.

To protect Writable AppVolumes during a disaster in a Nutanix environment, one possible solution is to use asynchronous DR between two sites. Asynchronous DR allows you to replicate VMs and their associated data from one site to another at regular intervals using protection domains and remote sites3.

https://www.nutanix.com/blog/vmware-app-volumes-on-nutanix

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:

According to Nutanix Move and Citrix/VDI Master Image Preparation guides:

The Process: When Nutanix Move migrates a VM from ESXi to AHV, it installs Nutanix Guest Tools (NGT) (including VirtIO drivers) on the target VM to ensure it boots and functions correctly on the AHV hypervisor.

The Issue: If this migrated VM is intended to be a Base Image (Gold Image) for a non-persistent pool (MCS/PVS), the NGT instance installed by Move contains specific identity information (VM UUIDs/communication certificates) unique to that single VM.

The Requirement: If you clone this image without cleaning up, every clone will attempt to use the same NGT identity, causing communication conflicts with the cluster.

The Solution: The administrator must Remove NGT (or run the NGT cleanup interaction) after the conversion (once the VM is on AHV) and before reprovisioning (before sealing the image and creating clones). This ensures the clones can register as unique entities.

persistent virtual desktops are virtual desktops that retain their state and configuration across sessions.

This means that users can customize their virtual desktops with their own applications, settings, and data, and have them available every time they log on.

Persistent virtual desktops are suitable for users who need a consistent and personalized experience, such as developers.

According to Nutanix best practices2, one of the recommended migration paths for persistent virtual desktops is to convert the physical computers to virtual desktops.

This can be done by using a tool such as VMware Converter or Microsoft Disk2vhd to create a virtual disk image of the physical computer’s hard drive.

Then, this image can be imported into Nutanix Cloud Platform and used as a base image for creating persistent virtual desktops.

This migration path can preserve the existing applications, settings, and data of the physical computers and minimize the disruption for the users.

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:

According to Nutanix LCM and NVIDIA vGPU operational best practices:

Live Migration Requirement: To keep a VM "online" during a host upgrade, the VM must be live-migrated (vMotioned) off the host entering maintenance mode.

vGPU Constraint: A VM configured with a vGPU profile cannot be live-migrated to a host that does not have a compatible physical GPU resource available.4 The destination host must have a GPU capable of hosting the specific vGPU profile.

The Solution: Since only one host currently has a GPU, there is no valid destination for the VM to migrate to. The administrator must install a GPU in a second host to create a valid migration target. This allows the VM to vMotion to the second host, keeping it online while the first host is upgraded.

Nutanix's Shadow Clones feature is used to create linked clones or snapshots of base VMs, which can improve VM provisioning time and storage efficiency by reducing the amount of duplicated data.

If an administrator disables Shadow Clones within a company's VDI environment, it is likely that deployment times would increase as the number of deployed desktops increases. This is because linked clones or snapshots would no longer be used, so each new desktop deployment would require creating a full copy of the base VM.

Nutanix Shadow Clones allow for distributed caching of a particular disk or VM data, which are in a ‘multi-reader’ scenario. This can help in scenarios such as VDI or private clone boot storms, where VMs on multiple nodes read from the same set of base disks12

According to the Prism Central Guide regarding Reporting, predefined system reports (such as Cluster Efficiency, Environment Summary, etc.) are built-in templates provided by Nutanix. The documentation explicitly states that while administrators can view and run these reports, they cannot delete or modify (Edit) the structure of these predefined reports directly.

However, the valid action an administrator can perform on a predefined report is to Schedule it. Scheduling allows the report to run automatically at specified intervals and email the results to recipients. If modification is required, the administrator must first clone the predefined report to create a custom copy, which can then be edited; the original remains locked.

The error message "Could not create SSL/TLS secure channel" when attempting to connect Citrix Studio to a Nutanix AHV cluster indicates a protocol mismatch between the Citrix Delivery Controller and the Nutanix Prism interface.

Nutanix AOS enforces strict TLS 1.2 security standards. To communicate effectively with the Nutanix cluster, the Citrix Delivery Controllers must have the correct version of the Nutanix AHV Plugin for Citrix installed. This plugin manages the hosting connection and ensures that the communication utilizes the required TLS 1.2 protocols and cipher suites. If the plugin is missing, outdated, or corrupted, the secure channel cannot be established, resulting in this specific error. Installing or upgrading to the latest supported plugin resolves the communication failure.