If your NSX Manager virtual appliance becomes inoperable, it can be restored from backup. The NSX Manager stores the desired state for the virtual network. If the NSX Manager appliance becomes inoperable, the data plane is not affected, but configuration changes cannot be made.
There are three types of backups:
This backup includes the set of ESX and KVM hosts and edges. This information is used during a restore operation to detect and fix discrepancies between the Management Plane's desired state and these hosts.
There are two backup methods:
Manual NSX Manager node backup and cluster backup
Manual node and cluster backups can be run anytime as needed.
Automated NSX Manager node backup, cluster backup and inventory backup
Automated backups run based on a schedule that you set. Automated backups are highly recommended. See Schedule Automated Backups.
To ensure you have a recent backup, you should configure automated backups. It is important to run cluster and inventory backups regularly.
You can restore an NSX-T configuration back to the state that is captured in any of the cluster backups. When restoring a backup, you must restore to a new NSX Manager appliance running the same NSX Manager version as the appliance that was backed up.
Backup and restore requires that hypervisors, the NSX Manager appliance, and NSX Controller appliances must have static management IP addresses. Changing management IP addresses is not supported. Using DHCP to assign management IP addresses for NSX Manager and NSX Controller appliances is not supported. Using DHCP to assign management IP addresses for hypervisors is supported only if the DHCP server is configured to always provide the same IP address to a given hypervisor.
The DNE Key Manager is not included when you back up and restore the NSX Manager. The DNE Key Manager requires a separate backup and restore procedure. See Backing Up and Restoring the DNE Key Manager.