Backup Exec 2012 Dedup question

I'm looking to set up an offsite copy of my dedup backups. I know the local copy requires a local drive, if I use Backup Exec to copy the dedup data to another location what are the requirements needed?

Does that also have to be a local drive, or iSCSI? what are the bandwith requirements?

I'm looking to use a local iSCSI NAS for onsite backups and replicate it across a 10 Meg pipe to another NAS (non ISCSI).

Thank you.