Download key generator for V-Ray v2.30.01 For Maya 2011 - 2013
Installer Support Maya 2011 2013 x64
V-Ray For Maya 2011 Ver-2.20.01
V-Ray For Maya 2012 Ver-2.20.01
V-Ray For Maya 2013 Ver-2.30.01
Install V-Ray -> Run Patch -> Select Maya Root Folder -> Choose Which version V-Ray installed -> Install
Example :- C:\Program Files\Autodesk\Maya2013