1) SAN Mode Backups
My understanding is that SAN mode backups read over the storage network direct from the ISCSI source but write the data back over the LAN.
If that is the case can I use SAN mode backup/replication with ISCSI as a source and NFS as the destination. I'm running a backup just now and it says in the job stats "SAN with changed block tracking" but I'm only getting 11Mbs

When I look at network card activity in task manager during a backup the LAN Nic and ISCSI Nic (both 1Gb) are around the same level of utilisation. That would indicate to me that it was indeed backing up in SAN mode; reading data through the ISCSI network, and writing it back on the LAN. Am I correct in the assumption?
2) CPU Utilisation
Our veeam box is only dual core and when I watch a backup the first core looks at pretty much full utilisation. Should I turn off de-dup and compression. Will that help in this instance.
Suggestions Welcome.