1. Stacking with SummitStack-320 for all of two X770 and two X670 where Master configured only for one of two X770
2. Two X770 and two X670 stacked separately with SummitStack-160 and connect both stacks with bonded 4x 40GbE link
Connecting all switches on single SummitStack-320 or having all switches on separate SummitStack-160 with 4x 40G bonded connection between both stacks will consume same port number. So, which one is better?
I really understand about that table but I still don't get it in relation to my question. My main question is about to see if separating two X770 and two X670V/X670-G2 into two stacks is better or worst idea than connecting them all into single stack since all of them support SummitStack-320 and SummitStack-160.
It's depends from your goals.
If you need more ports - then it can be single stack.
If you need more performance - you need separate stacks (In case - stack X770 with X670V).
If stack X770 with X670-G2 - you can use single stack.
If stack X770 with X670-V - you can see stack performance degradation