Ive been using a Drobo 2nd gen with my wife's 2007 iMac. The iMac has two Firewire ports: - an 800 port connected to my Drobo (which is used for data) - a 400 port connected to an old 500 GB Ext HD (used as a scratch drive for Final Cut Pro) This has worked fine for my purposes. Im considering moving up to a new 27" i7 iMac. However, I believe the new iMac only has one 800 FW port. My question is: if I daisychain my scratch disk through the Drobo FW ports (the Drobo has 2 FW 800 ports) via a 400 to 800 adapter, will I get the same kind of performance I need for Final Cut Pro?