Preferred is dual C9400 at each DC (small, less than 10 servers), but what is risk of having only 1x C9400. there are 2 supervisors board and card can be replaced without shutdown of the switch, so what is the risk of having only one C9400?Of cause i...

I’m not too much into network. Can C9300 be used as a Core switch in a stretch network? What feature is lost compared to C9400?  https://www.router-switch.com/media/upload/product-pdf/cisco-catalyst-9000-switches-comparison-9200-vs-9300-vs-9400-vs-95...