I am currently building an old gaming rig (DFI NF4) with an Areca RAID 6 card and 4x 2tb WD drives as a file server and DL machine. What is the best and fastest way to connect my main rig to it? My RAID card does not have an external port. Should I invest in one that does? Is gigabit LAN my fastest option since it will be hooked into my router? Should I look into an esata expansion card? Is it possible to connect the two computers that way? The file server does not have built in esata but my new pc does. Info appreciated.