Xsan Newbie needs help

I have been researching the topology schemes for Xsan and find I get more confused so hopefully you can clear the air for me.

I have 2-Xserve G5's (MDC prim and backup),1-G5 tower (temp OD Master until the new Xserve arrives), 2-Xraid chassis, 1-Fibre switch, 1-GB Ethernet switch and 2-FCP G5 workstations. What is the best strategy to use to configure this? I have heard 2 so far

First: Configure all Xsan clients on a private network for metadata and Fibre for user data. Use the ODM server as a NAS head to allow connectivity to the production network, define user permissions, control AFP and SAN shares for san and non-san clients. All access controls would then be handled by the server/workgroup manager

Second: Have all devices (Xserve, X-raid, Sanbox and clients)connected to both the private and production LANs with the workstations handling the shares to data volumes under a local user account on the desktop. Use the ODM to control software and OS updates. Is there a dual nic problem with routing on the workstations?

Please throw in anything you think would be helpful. What data goes over what pipe? If we're using GB ethernet can we get rid of the private LAN? If not, why?

Thanks for any help and sorry for all the questions

Chris

Thanks for the help

Chris