Backup Exchange DAG using NetBackup - using NetApp storage

Hi,

What is the best way to backup Exchange DAG using NetBackup - we are using NetApp storage for Exchange

We we NetApp snapmirror for DR. 

One Exchange node in EU and other is US, we have two active / passive DB in both location.

For granular restore and long term backup we want to use NetBackup.

What is the best way to backup the Exchange in this scenario?

Thanks