A storage administrator is baselining performance for a new server attached to an EMC Symmetrix VMAX array. The server has two Fibre Channel HBAs each connected through separate fabrics to two FA ports on the Symmetrix.
The administrator is looking at the Director and Port statistics in Performance Manager. Every day there are several hours where the “Port % Util” statistics increase noticeably but the “I/O per sec” and “Dir % Util” does not change significantly.
Which type of workload change could explain this situation?

A.
Size of the I/Os increased during that period

B.
Size of the I/Os decreased during that period

C.
Workload shifted from heavy reads to heavy writes during that period

D.
Workload shifted from heavy writes to heavy reads during that period