Daisy chain or FW to each 400/800 port on imac?

I have a 2007 intel imac with 1 FW400 port and 1FW800 port.
I have one 5400RPM 1TB external hard drive to house all my media files (music,pics & movies) with FW 800 or FW 400 ports.
And one 7200RPM 2TB external hard drive to serve as a backup for both my imac & the 1TB hard drive, with FW 800 or FW 400 ports.
Question is what is the best way to connect these without slowing the whole thing down? Connect the 1TB drive to the FW400 port on the imac and the 2TB drive to the FW 800 port on imac....or daisy chain one to the other then to the imac, all using FW 800???
Thanks!
Ivansnikki

Okay, so just to clarify: 1TB (5600RPM) HD <-> 2TB (7200RPM) HD <-> imac?
Thanks for the quick response!

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JoeyR wrote:
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Daisy chain or FW to each 400/800 port on imac?

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