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Okay, there is a lot of stuff in that paragraph. Some comments
NDMP is your transport for the backup. If you look at the VMFS LUN on the Netapp pull the VMDK files these will be crash consistent. You are going to have to snap them first and then use something to backup the snap, such as NDMP. This is doing things at the SAN layer.
VCB is doing it at the VMware layer. Here VCB will co-ordinate a VMware snap with a quiesce of OS file system (not application) and then mount the disks to your backup server (for the backup software to backup), or dump a copy of the disks in CAL format into a holding tank (for the backup software to then backup).
You also have the option of putting backup agents within the VM, this can help with doing an application quiesce if needed.
Your really want to start with what type and frequency of restores you need to do, then look at the equipment and software you have at your disposal and then come up with a suitable backup architecture.
Considering awarding points if this is of use
