Verify media set after duplication

Hi, yes its reccommended to run verify even after disk based jobs.    The verify portion of the job can be scheduled to run seperately but it needs to be ran at least periodically. 

Please see my short blog on it https://www-secure.symantec.com/connect/blogs/backup-exec-2012-how-verify-option

thanks

Other than copying the backup set, the duplicate process also updates the catalog so that you can use the duplicated backup set.

The verify process for the duplicated backup set is to ensure that it can be read back.  If you skip the verify process, then there is no guarantee that the duplicated backup set is written correctly and can be read back.  The verification process for the source backup set has nothing to do with the verification of the duplicated backup set.