In a cross-vCenter environment there can be one primary NSX Manager and up to seven secondary NSX Managers. Some setup tasks are performed on every NSX Manager, whether it will become a primary NSX Manager, or a secondary NSX Manager. Install the NSX Manager Virtual ApplianceNSX Manager is installed as a virtual appliance on any ESX host in your vCenter environment. Configure Single Sign OnSSO makes vSphere and NSX more secure by allowing the various components to communicate with each other through a secure token exchange mechanism, instead of requiring each component to authenticate a user separately. Register vCenter Server with NSX ManagerNSX Manager and vCenter Server have a one-to-one relationship. For every instance of NSX Manager there is one vCenter Server, even in a cross-vCenter NSX environment. Configure a Syslog Server for NSX ManagerIf you specify a syslog server, NSX Manager sends all audit logs and system events to the syslog server. Install and Assign NSX for vSphere LicenseYou can install and assign an NSX for vSphere license after NSX Manager installation is complete by using the vSphere Web Client. Exclude Virtual Machines from Firewall ProtectionYou can exclude a set of virtual machines from NSX distributed firewall protection.