If you want to avoid vMotion of VMs to a transport node that is not functional, place that transport node in NSX Maintenance Mode.
To put a transport node in NSX Maintenance Mode, select the node, click Actions → NSX Maintenance Mode.
When you put a host in NSX Maintenance Mode, the transport node cannot participate in networking. Also, VMs running on other transport nodes that have N-VDS or vSphere Distributed Switch as the host switch cannot be vMotioned to this transport node. In addition, logical network cannot be configured on ESXi or KVM hosts.
- A transport node is not functional.
- If a host has hardware or software issues that are unrelated to NSX-T, but you want to retain the node and its configurations in NSX-T, place the host in NSX Maintenance Mode.
- A transport node is automatically put in NSX Maintenance Mode when an upgrade on that transport node fails.
Any transport node put in the NSX Maintenance Mode is not upgraded.