Sajna hiába, a szűk keresztmetszet az ingyenes ESXi.
https://www.veeam.com/blog/veeam-and-free-esxi.html
Q: What if I use Veeam Backup & Replication (Veeam Backup Free) for free ESXi?
A: If you attempt to perform a backup operation with Veeam Backup & Replication (or Veeam Backup Free Edition) for a VM running on free ESXi, you will see the following error message: "Error: Can’t create snapshot, current license or ESXi version prohibits execution of the requested operation.”