A customer wants to add a fully populated BladeCenter chassis to their existing Storwize V7000.They have experienced performance issues in the past due to congestion and high utilization of…

A customer wants to add a fully populated BladeCenter chassis to their existing Storwize V7000.They have experienced performance issues in the past due to congestion and high utilization of inter-switch links (ISL). The technical specialist has been asked for the recommended ISL oversubscription ratio. Which of the following is the best response?