A new data warehouse will be hosted on an existing 4-engine VMAX array. The database
server has 4 HBAs connected at 4Gb/s. Due to limited SAN switch ports only port 0 on each
VMAX FA is connected – also at 4Gb/s. The workload is expected to require at least
2300MB/s of reads at 128KB I/O size and must maintain performance in case of any major
component failure in the host, switch or array. Assume that the existing workload on the
VMAX does not exceed 100MB/s per port and assume that the ports can sustain up to
300MB/s without exceeding 70% utilization. What is the minimum number of FA ports
needed to spread the workload evenly across all 4 VMAX engines and meet the above
performance requirements?

A.
12 FA ports, 3 per engine

B.
16 FA ports, 4 per director

C.
24 FA ports, 3 per director

D.
16 FA ports, 4 per engine