From VMware integration doc:
The NetWorker VMware Protection solution only supports image-level backup; you cannot perform individual folder or drive-level backup.
The NetWorker VMware Protection solution does not support the manual selection of individual VM disks for backup. You can, however, skip specific disks by marking each disk that you want to exclude as an Independent disk in the Virtual Machine Properties window on the vSphere Client.
VBA / NVP Appliance is used to backup Image Level of Clients but by using FLR in VBA we can restore individual file restore with some Limitations.
Pls. Have a Look @ FLR Limitations on Page 70 - EMC NetWorker and VMware Release 8.1 Integration Guide