I need to configure EV to migrate archive content to Backup Exec (supported in compatibility lists and available when setting migration on partition properties). I have not found any guideline to set this option on both the EV and the BackupExec server, Any advice?
I have no EV environment at hand, but I believe you need to look in the BE guide for "Backup Exec Migrator"
In EV, on your EV Vault Store Partition(s), check the Collect and Migrate tab. There should be a dropdown to define the secondary location, which should have Backup Exec.
I recommend to contact Veritas Support, and see if they can point you to documentation, KB Articles, or assist otherwise.