NSX-T upgrade pre-check warning "DRS should be Enabled and Fully automated for the cluster containing host"

Products

• VMware NSX

Issue/Introduction

Running NSX pre-check and receiving a warning:
"DRS should be Enabled and Fully automated for the cluster containing host (##.#.#.###, fabd####-####-####-####-####fac62531). Alternatively, put the host in vSphere maintenance mode manually."

Environment

VMware NSX

Cause

The vSphere cluster does not have DRS enabled and set to fully automated. This is either due to a configuration choice or vSphere is not licensed for the DRS feature.

Resolution

Enable DRS in the vSphere client for the cluster in question and set the DRS feature to fully automated if licensing permits. 
Enable vSphere HA and vSphere DRS in ESXi

Change the host upgrade unit group upgrade mode.

• Select Maintenance mode.
  For standalone ESXi hosts and ESXi hosts that are part of a disabled DRS cluster, place the hosts into maintenance mode.
  
  
• For ESXi hosts that are part of a fully automated DRS cluster, if the host is not in maintenance mode, the upgrade coordinator requests the host to be put in maintenance mode. vSphere DRS migrates the VMs to another host in the same cluster during the upgrade and places the host in maintenance mode.
  
  
• Select In-place mode to avoid powering off and placing a host into maintenance mode before the upgrade.
  For standalone ESXi hosts and ESXi hosts that are part of a disabled DRS cluster, you do not need to place the hosts into maintenance mode.
  
  For ESXi hosts that are part of a fully automated DRS cluster, you do not need to place the host into maintenance mode.

Refer to the following documentation for further details: Configure Hosts