You work as a design specialist at Certkiller .com. Certkiller .com has a HBA CLARiiON/SAN (dual fabric, redundant host connections) environment. Why should Multipathing in conjunction with PowerPath be considered in this environment?

A.
With multiple paths, only PowerPath is able to failover the SP correctly because it is host resident software.

B.
Power Path and Multipathing are required for failover because CLARiiON uses the single SP LUN ownership model so only one path is active at a time.

C.
No SP failover and trespass of the respective LUNs is required when one path from a Host to an SP fails because PowerPath redirects I/O over surviving path.

D.
No SP failover and trespass of the respective LUNs is required when one path from a Host to an SP fails because PowerPath load balances dynamically across HBA and Fabric.

Explanation:
From PowerPath admin guide “PowerPath tries to maintain maximum performance and reduce management through dynamic load balancing. PowerPath is designed to use all paths at all times.