Disk configuration on Physical buses of a PCI-X Dual Channel U320 SCSI RAID Adapter

We're running AIX 5.3.0 on an IBM p5-550

I have a total of eight 73.4GB disk drives; four
on each of two Physical buses of the PCI-X Dual Channel U320 SCSI RAID Adapter.

I will have four disks for one hdisk and the other four
for another hdisk; both hdisks will be RAID 10.

Question:

Does it make a difference how the four disks for each hdisk is
distributed on the RAID Adapter Physical buses?

ie. Should all four be on the same Physical bus? Should two be on one Physical bus and two on the other?
etc.

Thanks,

Denny Watkins
Director Computer Services
Morningside College
1501 Morningside Ave
Sioux City, Ia 51106-1717

Phone: 1-712-274-5250