As per VMware documentation: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.0/administration/GUID-5D7E3D43-6497-4273-99C1-77613C36AD75.html
Requirements for Multisite Deployments
The bandwidth must be at least 1 Gbps and the latency (RTT) must be less than 150 ms.
MTU must be at least 1600. 9000 is recommended.
Requirements for Multisite Deployments
Inter-site Communication
- The bandwidth must be at least 1 Gbps and the latency (RTT) must be less than 150 ms.
- MTU must be at least 1600. 9000 is recommended.
NSX Manager Configuration
- Automatic backup when NSX-T Data Center configuration changes must be enabled.
- NSX Manager must be set up to use FQDN.
Data Plane Recovery
- The same internet provider must be used if public IP addresses are exposed through services such as NAT or load balancer.
- The HA mode for the tier-0 gateway must be active-standby, and the failover mode must be preemptive.
Cloud Management System
- The cloud management system (CMS) must support an NSX-T Data Center plug-in. In this release, VMware Integrated OpenStack (VIO) and vRealize Automation (vRA) satisfy this requirement.
https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.0/administration/GUID-5D7E3D43-6497-4273-99C1-77613C36AD75.html
