To address issues with File server services being down on a cluster, the administrator should investigate the 'minerva_nvm' service. This service is responsible for communicating with the CVM and sending heartbeats to monitor health information and facilitate failover processes.
Data Lens is the Nutanix Unified Storage capability that allows for monitoring usage for all Files deployments globally. This is because it functions on a global level, in a cluster-neutral environment, and is not tied to a single Nutanix cluster, enabling comprehensive and centralized monitoring.
Before upgrading the Object Manager, the administrator should upgrade the MSP (Management Server Platform). This step ensures that all prerequisites are met and that the Object Manager will function correctly with the updated components.

The issue arises because the file server instance was only configured with SMB. In order to enable multiprotocol access, including both SMB and NFS, the file server must be configured to support both protocols during its creation. Without checking the box to enable NFS protocol during the setup, the option to enable multiprotocol access for NFS clients will not be available.