When racking an X-Brick cluster that requires InfiniBand switches, why do you have to leave a 1U space between the switches?

When racking an X-Brick cluster that requires InfiniBand switches, why do you have to leave a 1U space between the switches?
A . Power cabling
B . SAS cabling
C . InfiniBand cabling
D . COM cabling

View Answer

Answer: A