http://blogs.msdn.com/velocity/archive/2009/06/24/troubleshooting-velocity-series-iii.aspxHow to use “Velocity” logging framework Microsoft project code named "Velocity" provides the ability to trace events on the cache client and cache host. These events are captured by enabling log sinks. A sink represents a valid destination to which logsen-USCommunityServer 2.1 SP1 (Build: 61025.2)