This notification-only object reports the role of the vCenter HA node affected by the reported event, per the roles defined in the MIB module's general description (such as Active, Passive, or Witness). Admins use it to know exactly which node in the three-node vCenter HA cluster the event concerns. For example, vmwVchaTargetNodeRole reporting the Passive node role tells the admin the standby node, not the currently active one, is the subject of this event.