https://portal.nutanix.com/page/documents/solutions/details?targetId=TN-2041-Nutanix-Files:file-server-virtual-machines.html
https://next.nutanix.com/files-storage-71/command-line-access-to-nutanix-file-server-vm-fsvm-via-ssh-nutanix-files-33420 The file server VM (FSVM) is a virtual machine that runs on Nutanix Files and provides file services such as SMB shares and NFS exports. The FSVM is based on CentOS and incorporates all the security and hardening that goes into the Nutanix Controller VM (CVM)2. The CVM is a virtual machine that runs on each node of a Nutanix cluster and provides storage management, data protection, cluster coordination, and other services3.
The FSVMs have some default configuration settings that can be changed depending on your workload requirements. For example, you can change the number of vCPUs, RAM, network interfaces, or disk size of an FSVM2. However, you should not change these settings without consulting Nutanix Support first.
One of the factors that affects the performance of an FSVM is its memory allocation. The more memory an FSVM has, the more cache it can use for file operations. This can improve the throughput and latency of file serving workloads4. Therefore, increasing the FSVM RAM to 96GB can help optimize its performance for a large number of users.

Comprehensive and Detailed Explanation From Exact Extract of Nutanix End User Computing documents:
According to Nutanix and Microsoft Best Practices for Non-Persistent VDI images:
* Policy Setting: The Group Policy setting "Allow Automatic Updates immediate installation" should be set to Disabled.
* Reasoning: In a non-persistent environment, desktops revert to their base state upon reboot. Allowing automatic updates to install immediately during a user session consumes system resources (CPU/IOPS) and any changes made are discarded when the user logs off and the VM reboots.
* Correct Management: Updates should be applied solely to the Master/Gold Image during a maintenance window. Once the master image is updated and sealed, it is redeployed to the pool.
Disabling immediate installation prevents the "Windows Update" service from attempting to patch transient clones unnecessarily.

This is because this option will allow the administrator to use Citrix Director to reset user profiles on a Nutanix Files share that provides high performance, scalability, and resilience3.
Citrix Profile Management is a solution that allows administrators to manage user profiles and settings across different devices and sessions12. Nutanix Files is a software-defined file storage solution that provides high performance and scalability for file data12. Nutanix Files supports all forms of profile management with efficient metadata caching techniques that optimize for faster VDI logon times12. Nutanix Files offers two types of shares: standard shares and distributed shares3. Standard shares are hosted on a single file server, while distributed shares are hosted on multiple file servers for load balancing and high availability3.
https://portal.nutanix.com/page/documents/solutions/details?targetId=BP-2079-Citrix-Virtual-Apps-and-Desktops:BP-2079-Citrix-Virtual-Apps-and-Desktops

Nutanix Files offers a feature called Smart DR, which enables share-level replication between active file server instances for disaster recovery.
Smart DR allows administrators to configure replication policies for each share, such as replication interval, retention period, and bandwidth limit.
Smart DR also supports failover and failback operations between source and target file servers in case of a disaster.
According to Nutanix best practices1, Smart DR is suitable for scenarios where users need to access their files from different locations or data centers.
https://next.nutanix.com/community-blog-154/nutanix-files-3-8-and-file-analytics-3-0-39309

one of the possible causes of poor performance in a VDI deployment is power management, which can affect CPU frequency and performance. Therefore, it is recommended to disable any power saving features on the BIOS level, such as C-states and P-states.
Another possible cause of poor performance is network configuration, which can affect network throughput and latency. Therefore, it is recommended to update network drivers and firmware on the Dell XC nodes with ESXi23, and ensure that they are compatible with Nutanix software.