Well, It depends on the cluster, is it a high performance cluster or a beowulf? or a database cluster? if its running a unix flavor and a database or something scientific then 100mb is fine, if its running winblows i wouldnt even bother, but its said that windows uses fibre "cause it needs to" it all depends ;) Quoting Joel Dudley : Date: Thu, 15 Jun 2000 13:01:50 -0700 Subject: clustering I am thinking about a clustering solution here at work and I have somequestions about hardware. Is 100Mbit Cat5 sufficient for cluster communication or do I need to go to fibre channel to really see some benefits. Anyone have experience with this? I am ignorant on the matter. Thanks. - joel ----- End of quoted message ----- Alien rocket scientist ----------------------------------------------------- Get free email and alien enlightenment from http://www.alienzoo.com