EMC Proven Professional – VNXe Specialist — Question 2

What is the recommended method when cabling an Isilon cluster with dual InfiniBand switches?

Answer options

• A. All int-a InfiniBand switch ports should be connected to one switch and all int-b ports should be cabled to the second switch.
• B. All internal switch ports on odd-numbered nodes should be attached to switch one and all even-numbered nodes should be cabled to switch two.
• C. All int-a switch ports should be cabled to the top row of switch ports on switch one and all int-b ports should be cabled to the bottom row of ports of switch one. Once switch one is full, continue cabling on switch two.
• D. It does not matter which switch ports are used. Any internal switch port can be cabled to either of the InfiniBand switches.

Correct answer: B

Explanation

The correct answer is B because it ensures optimal redundancy and load balancing by assigning odd-numbered nodes to one switch and even-numbered nodes to the other switch. Options A and C do not provide the same level of redundancy, while option D disregards the importance of proper cabling practices, which can lead to network issues.