Be sure to review the upgrade check list section
of the User Guide document closely prior to upgrading as Veeam Backup for Nutanix AHV 2.0 supports integration with Veeam Backup & Replication version 10 and later.
You can check your build number under Summary | Appliance version
by clicking the gear icon at the top-right corner of the main menu in Veeam Backup & Replication AHV Backup Proxy. After upgrading, your build number will be 2.0.558.
For new installations please follow this guideline