I assume you will have to capture video from the floor too. In this situation the Geffen extender will not allow you access to things like audio/video I/O from something like a Kona Card.
I understand your situation. You need your fast video import station on the floor and the fast drive off the floor. I am trying to do this as well. If a Atto Celerity card was attached to my older MacPro running OSX 10.5 Server, it would basically be a super Fibre Bridge/Server. You could share all your drives over Fibre, Firewire, Fast ESATA, Etc.
Seems like you need the Atto Celerity Target Mode Driver. This would allow you to connect 2 Macs together and mount the drives of the Mac off the floor, on the floor Mac.
From my research, I think they reserve this driver for OEM clients so that they can eliminate people with low budgets from making fibre servers from their old Mac for very low cost. Maybe someone has a Target Mode Driver and would be willing to share.
Atto advertises that they offers a Target Mode Developer’s Kit and Target Mode Support without any disclaimers, but when you talk to them, they say that they only let large clients have this. It is very misleading. False advertising on Atto’s part. For them to say that the cards support Target Mode, when they don’t is a big deal.
Lets see if anyone can help with a Target Mode Driver for these cards, because others would greatly benefit from this.
Regards.
Caston