A system has four CPUs, Fibre Channel storage and an I/O intensive workload. The system
manager observes that under peak I/O loads, the primary CPU is saturated while other CPUs
have available capacity. Which action is most likely to reduce the utilization of the primary CPU?

A.
Enabling write back caching to reduce disk I/O traffic

B.
Moving data onto a DECram disk to improve I/O throughput

C.
Adding more memory to increase I/O buffer space and caching

D.
Using Fast Path preferred CPU settings to move the I/O to another CPU