Architecting a VMware NSX Solution : Design Considerations : 4.5 NSX Manager : 4.5.1 Design Considerations
   
4.5.1 Design Considerations
Deploy an NSX Manager per vCenter server as of version 6.1.x. NSX Manager has a direct 1:1 mapping with the vCenter Server.
Deploy the NSX Manager appliance to the management cluster and protect with VMware vSphere High Availability to improve availability.
The NSX Manager appliance must be configured for appropriate configuration backup through the NSX Manager user interface options. The configuration can be backed up to a remote location on-demand or scheduled in line with existing business RPOs.
NTP and other supporting infrastructure services, such as DNS, must be configured according to the best practices highlighted in the design guides.
The NSX Manager is a virtual appliance, which is deployed with the following specifications.
Table 2. NSX Manager Specification
Attribute
Specification
Memory
12 GB
vCPU
4
Storage
60 GB