Hi,
After you create the backup specification(bar list), You can configure the VM to use SAN transportation mode.
You can also select default "fastest available" which will use SAN/HOTADD if they are available.
So connect your backup host and ESX to the same ZONE in the SAN switch to use SAN transport.
With DP 8/9 it is very well possible. I think With patches, 603 also capable of doing it. but WITH DP 8/9 you will get more advanced features.
Note: Transport mode should be selected seperately for each VM.
How: Select the backup properties. I the right side object list pane, Right click on the VM; Deselect "use default options"; Click on adavanced tab-> select transportation mode; Save; Run backup ->check transportation mode is showing as SAN.
Also you can do this y changing omnirc file: (copy and rename programdata/omniback/ omnirc.tmpl to omnirc)
Uncomment and change below line:
OB2_VEAGENT_RESTORE_TRANSPORT_METHOD=SAN
You can also change block size, according to your connection band width to 8MB, 16MB etc by changing omnirc file.
OB2_VEAGENT_BACKUP_DISK_BUFFER_SIZE=16MB
Cheers,
Nigil