Restore a deleted vCenter Server ... - Veeam Software
https://www.veeam.com/kb314107.04.2020 · When Veeam Backup & Replication starts the restore process, it copies the VM .vmx file to the datastore and registers it on the host. As soon as the VM is restored and registered with the original name, the restored VM becomes the original VM in the vCenter inventory. Then, HA locates this VM and tries to bring it online.
KB2328: How to Backup vCenter Server Appliance
https://www.veeam.com/kb232809.08.2017 · VMware Best Practice shows to backup the database as regular maintenance. Then you would be able to restore the server from step 1, then restore the database to whichever point in time with the backup from step 2. To backup the VCSA with Veeam (step 1): Create a typical backup job. VMware Tools Quiescence is disabled on the job level.