A new data warehouse will be hosted on an existing 4-engine VMAX array. The database
server has 4 HBAs connected at 8Gb/s. Due to limited SAN switch ports only port 0 on each
VMAX FA is connected – also at 8Gb/s. The workload is expected to require at least
1700MB/s of reads @ 128KB I/O size. It 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 350MB/s per port. Also assume that the ports can sustain up to
500MB/s without exceeding 70% utilization. What is the best practice HBA to FA mapping to
ensure the required performance of the data warehouse?
A.
HBA0 -> FA 7e0, 8e0, 9e0, 10e0 HBA1-> FA 5e0, 6e0, 11e0, 12e0 HBA0 -> FA 7h0,
8h0, 9h0, 10h0 HBA1-> FA 5h0, 6h0, 11h0, 12h0
B.
HBA0 -> Engine 3 FA ports HBA1 -> Engine 4 FA ports HBA2 -> Engine 5 FA ports
HBA3 -> Engine 6 FA ports
C.
HBA0 -> E0 FA ports HBA1 -> F0 FA ports HBA2 -> G0 FA ports HBA3 -> H0 FA ports
D.
HBA0 -> E1 FA ports HBA1 -> F1 FA ports HBA2 -> G1 FA ports HBA3 -> H1 FA ports
Explanation: