I have a rather nice NAS server. I'd like to be able to process exremesly large amounts of data via workstations that are mounted in the same rack as the NAS. Unfortunately, NAS is simply too slow. My initial thought was to upgrade the NAS and the workstations to fibre channel network cards and that we would increase the bandwidth by doing that. I have found fibre channel cards that will work with all the machines involved, but our sales rep is telling me that we would get no better than 1 gbps across this network, even with a fibre channel switch. My obvious desire is to increase the bandwidth so that mutliple machines can access this server with much better performance than what we get over copper. If block level SAN technology is the only approach that will work, what is the most cost effective way to upgrade and convert and will the workstations leverage the increased bandwidth?