Doing a defrag on a server is even more annoying, especially when it insists that you have to set a defrag up at boot time and insists on a restart. You then get a vicious circle of wondering why it's taking ages to reboot, as you can't see any signs of life, so crash out, go into safe more, tell it to defrag or whatever and round and round you go. Meanwhile everyone complains that the network keeps falling over
