We are using the "backup copy" feature for medium time archiving.
Veeam allow to choose "monthly" points for exemple.
It's an interesting feature but really complicated to monitor.
You have to check the reports, you don't have an "easy" view like the backup.
The backup copy job are "running" the most of the time.
Also, backup copy jobs can't be used for Sure Backup, and the Veaam.Backup.Validator isn't capable to scan a network share
I wish I add a way to be sure, really fast, that montlhy / annual backup are in a good state.
I was checking that the _m files was existing but it was a bad idea; Veeam keeps the file even it isn't healthy

Thanks