Of all the sports I photograph, I find volleyball one of the more challenging. It's normally shot indoors which is always a challenge due to less than optimal lighting. And following volleyball action is always very challenging. A fast-focusing camera/lens combination along with a high frame rate camera helps immensely with volleyball.
This photo was shot at the Indiana Convention Center which has decent lighting for sports. It was shot using a Nikon D700 with a 70-200mm f/2.8 VR lens attached. With the vertical grip attached the D700 can shoot at 8 frames per second. The camera was set in manual mode: Auto ISO (ISO 6400), 1/1250 shutter speed, f/2.8 aperture. I was also sitting on my duff close to the net.