I'm planning on stacking Dell PowerConnect 6248 switches together. I know that I need one stacking module in each switch, but I'm uncertain about the cabling. Since I only have two switches, do I need to loop them using two cables or will one stacking cable suffice? Thanks!
You could get away with one. However unlikely, but possible, losing a stacking module would sever the connection between switches, and isolate the stacking function from one another. A second interconnect would provide redundancy, and possibly increased bandwidth between stack members.
This whitepaper has some good information about stacking: Stacking Dell PowerConnect 6200 Series Switches