Certkiller .com has to use CUA in a project that needs high performance in writes and reads. What is the best platform for this?

A.
External CUA on a Dell2850, Centera set up for CPP

B.
Internal CUA on a Gen4 node; Centera set up for CPM

C.
Internal CUA on a Gen4 node; Centera set up for CPP

D.
External CUA on a Dell2850, Centera set up for CPM