Symantec Backup Exec. Licensing questions?

Question

Backup

Actually, the question is this. There is a license for a relatively old version of Backup Exec - 2012. But we mainly use Windows Server 2012 R2. And there are no agents for this version of the server. Those. there is a question about migrating to a new version of Symantec, or migrating to a new backup system.
To upgrade to the new version, you need to buy it, right? It's just that this version was bought before my arrival.
If so, then for now, preliminary, the Veeam solution is more interesting in this regard.