I have a simple sounding design question and am looking for a recommendation.
This is the situation: We have an ESX cluster and a VBR server at the headquarter. Actually about 7 TB (full once per week) and 400 GB (incremental per day) are backed up. All is running fine.
Now we want to store a copy of the backups on a NAS (QNAP NAS with 8x 14 TB) at a remote site. With a normal copy job this is no problem. Thanks to "Forever-Incremental" we only need to transfer one Full-Backup and keep fingers crossed that the backup chain never get damaged.

But now, full backups for archive purposes should be stored monthly and yearly on this NAS.
Will these restore points then be transferred as a "Full" (which unfortunately would not be an option with 7 TB and 100 Mbit bandwidth)?
The NAS at the remote site is directly connected via NFS to the VBR server at Headquarter. Or would it be better to use a transport agent and connect the NAS via iSCSI to it?
Do you guys see any other possibilities to transfer certain archive states to a remote site as easy as possible?
Any input would be highly appreciated.
Thank you,
Timo