A new EMC customer recently installed their first VMAX and a complete suite of EMC
management tools. Their lead capacity planner attended training and has started monitoring
the VMAX. You receive a call and this person describes the measurements observed.
During the period of heaviest workload, reported I/O rates on certain Fibre Channel ports is
nearing 2,000/second but those ports only display about 10% utilization. What is the likely
cause?
A.
I/O block size is very large
B.
Striped metavolumes report invalid IOPS
C.
Sequential prefetch skews throughput %
D.
I/O block size is very small