To Build your own render farm
Render Manager: http://cgru.info/home
A blog page talking about how to built your own Render Farm: http://arstechnica.com/information-technology/2014/05/how-to-network-lots-of-dumb-computing-muscle-in-a-fast-efficient-render-farm/1/
a maya script for v-ray http://www.creativecrash.com/maya/script/v-ray-tuner-for-maya