Many software providers from large to small are in the race to offer virtualization solutions, and many enterprises are taking advantage. While this futuristic technology certainly offers many benefits, it has one critical challenge to its overall performance -- disk file fragmentation. File fragmentation -- the splitting of files into pieces (fragments) in order to better utilize disk space -- is a performance challenge in non-virtual environments, and has been for many years. But virtualization brings with it even more critical fragmentation issues, requiring solutions like never before.