I am looking at simulating client load for our new Cluster and SAN
environment and was wondering if anyone new of any tools to help.

I have had a look at IOMeter but unless someone has any suggested parameters
it seems to be just giving me some meaningless numbers.

I would like to be able to simulate the load of our students logging in and
out with their roaming profiles etc. if possible other wise just some actual
numbers about what is good, "normal", or acceptable disk latency would be a
real good start.