Unity 600 with mixed disks and DAE types.

Hi,

Is there any recommendations or best practice to connect different types of DAE's in Unity systems?

the box contain the following items:

1x2.5 DPE   ( 6x1.8TB 10K SAS 'system disks' + 7x400GB flash + 12x1.6TB flash)

5x2.5 DAE's ( 35x1.6TB flash + 72x1.8TB 10K SAS)

4x3.5 DAE's ( 58x 4TB NL-SAS)

Is it better to connect 3.5 shelves together into BUS 1 and cascade them together and connect 2.5 shelves to Bus 0 and cascade them together?

Thanks