This SonicWall® SonicOS 7 NSv Getting Started Guide describes how to install SonicWall NSv and provides basic configuration information.
The SonicWall® NSv is SonicWall’s virtualized next-generation firewall appliance that provides Deep Packet Inspection (DPI) security and segmentation in virtual environments. With some platform specific differences, SonicOS 7 running on the NSv offers the same feature functionality and security features of a physical appliance, with comparable performance. SonicOS Virtual is a fully featured 64-bit SonicOS 7 powered by SonicCore.
NSv10/25/50/100/200/300/400/800/1600 instances running on 6.5.4.4-44v-21-1288 image supports vMotion by default.
NSv270/470/870 instances does not support Vmotion by default and need to enable the vMotion option. Diagram to enable Vmotion on these instances is present in diagram page and can be accessed using URL: https://<MGMT IP of NSv>/sonicui/7/m/mgmt/settings/diag. Image shows the option that needs to be enabled for vMotion to work on NSv: 
SonicWall® NSv series firewalls support both Classic mode and Policy mode. Selection of or changing between Classic and Policy modes is supported on NSv series from SonicOS 7.0.1 pnwards. For more information on supported or unsupported feature list refer to the Feature Support Information section and changing between Classic and Policy modes is supported on NSv series refer to the About SonicOS 7 for the TZ, NSa, NSv, and NSsp Series Features Specific to NSv guide in https://www.sonicwall.com/support/technical-documentation.