Power Book For Live Performance, " Ivoiry Piano " best config ? Options

[SOUKOUSS]

Hi all,

I will make a Tour in France in june / july, and I'd like use the Ivoiry Synthogy on stage.
What is the best config I need to have ?

Is the following a good idea ? :
Power book 15" processor 1,5 or 1,67 ? with 1,5 Gig RAM
HD firewire, for the Ivoiry install folder
RME fireface

What is the best linkink of the sound card and of the Hard disk ? The both on the same FW800 port ( in "chain mode ") or one on the FW400 and one on the FW800? And which one ?

I have already a Maxtor Firewire 250 Go /16 Mo cache with 150 Go free
Can I use it for Ivoiry, or need I use one HD only for the ivoiry ?
If I create a partition on my Maxtor, is it as good as have a dedicated HD ?

Thank you very much guys for reading me, and your answers !
BYE

[SOUKOUSS]

Like I said, I've just heard talking about that chaining mode, but I'm not expert.

iShawn,
there is no question to have if you have more than two interfaces for only two FW ports on our computer : you HAVE to use the chain mode, or some HUBs, and in both cases, you share the bandwith.

If you have only two interaces, like in my case, I still wondering if it's good to use the same FW800 port, or to separate them. I precise that the question wouldn't exist if I had two FW800 ports... !