Nutanix Data Lens, part of Nutanix Unified Storage (NUS), provides data governance and analytics for Nutanix Files, including features to optimize storage usage. The administrator wants to maximize available space on the file server by moving cold (infrequently accessed) data to an object store (e.g., AWS S3, Azure Blob), which aligns with a specific Data Lens feature.
Analysis of Options:
* Option A (Smart Tier): Correct. Smart Tier is a feature in Data Lens (and Nutanix Files, as noted in Question 34) that identifies cold data based on access patterns and tiers it to an external object store, such as AWS S3 or Azure Blob. This process frees up space on the file server while keeping the data accessible through the same share, maximizing available space as required.
* Option B (Smart DR): Incorrect. Smart DR is a disaster recovery solution for Nutanix Files that automates replication policies between file servers (e.g., using NearSync). It replicates data to a recovery site for DR purposes, not to an object store, and does not free up space on the primary file server-it creates a copy.
* Option C (Backup): Incorrect. Data Lens does not have a "Backup" feature. While Nutanix Files can be backed up using third-party tools or replication, this is not a Data Lens feature, and backups do not move cold data to an object store to free up space-they create additional copies for recovery purposes.
* Option D (Versioning): Incorrect. Versioning is a feature in Nutanix Objects (as seen in Questions 11 and 15), not Data Lens, and it retains multiple versions of objects, not file server data. Even if versioning were applied to Files shares (e.g., via snapshots), it does not move cold data to an object store-it retains versions locally, consuming more space.
Why Option A?
Smart Tier, supported by Data Lens, identifies cold data on the file server and moves it to an external object store, freeing up space on the primary storage while keeping the data accessible. This directly addresses the requirement to maximize available file server space by offloading cold data, aligning with Data Lens's data management capabilities.
Exact Extract from Nutanix Documentation:
From the Nutanix Data Lens Administration Guide (available on the Nutanix Portal):
"Data Lens supports Smart Tier, a feature that maximizes available file server space by identifying cold data based on access patterns and tiering it to an external object store, such as AWS S3 or Azure Blob. This process frees up space on the file server while maintaining data accessibility."
:
Nutanix Data Lens Administration Guide, Version 4.0, Section: "Smart Tier with Data Lens" (Nutanix Portal).
Nutanix Certified Professional - Unified Storage (NCP-US) Study Guide, Section: "Nutanix Data Lens Features".

The most likely cause for this issue is that the file server resides on a single node cluster. A distributed share is a type of SMB share or NFS export that distributes the hosting of top-level directories across multiple FSVMs, which improves load balancing and performance. A distributed share cannot be created on a single node cluster, because there is only one FSVM available. A distributed share requires at least two nodes in the cluster to distribute the directories. Therefore, the option to use distributed share/export type instead of standard is not present when creating a share on a single node cluster. Reference: Nutanix Files Administration Guide, page 33; Nutanix Files Solution Guide, page 8

Data Lens is a feature that provides insights into the data stored in Files across multiple sites, including different geographical locations. Data Lens allows administrators to monitor usage, performance, capacity, and growth trends for all Files deployments globally. Data Lens also provides reports on file types, sizes, owners, permissions, and access patterns3. References: Nutanix Data Lens Administration Guide3

The most likely cause of this issue is that the file server has been cloned. Cloning a file server is not a supported operation and can cause various problems, such as Data Lens not being able to enable or disable for the cloned file server. To avoid this issue, the administrator should use the scale-out feature to add more FSVMs to an existing file server, or create a new file server from scratch. References: Nutanix Files Administration Guide, page 28; Nutanix Files Troubleshooting Guide, page 11

The administrator can meet this requirement by configuring network segmentation for Volumes. Network segmentation is a feature that allows administrators to isolate network traffic for different types of services, such as Volumes, Files, or Objects, on a Nutanix cluster. Network segmentation can improve the security, performance, and manageability of network traffic. By configuring network segmentation for Volumes, the administrator can place all iSCSI traffic on an isolated network and prevent it from interfering with other services or applications. Reference: Nutanix Volumes Administration Guide, page 15; Nutanix Volumes Solution Guide, page 7