You work as a design specialist at Certkiller .com. The members of an active-active UNIX cluster are each configured with four identically configured HBAs, with two connections to each fabric. An array provides two fibers to each fabric with all LUNs presented on all channels. Each member’s primary application can fail to the other. Reads and writes tend to be long and sequential. You need to implement a strategy that will offer the best performance.
Which strategy would you implement?

A.
Set PowerPath load balancing policy to round robin.

B.
Set PowerPath channel groups using path segmentation

C.
Set the PowerPath load balancing policy to Symmetrix Optimization

D.
Invert cluster member B’s HBA cabling so that they are not on the same fabric.

Explanation:
Symmetrix Opt is the most intelligent of the polices, default by EMC thus provides the most optimal performance in most cases.