A customer has implemented Unisphere Quality of Service to ensure that an application obtains the resources necessary to meet the required service level based on a consistent IOPS level.
However, when the storage administrator reviewed performance of the application, the IOPS were variable and lower than expected. Other applications are receiving exactly the resources defined through the performance policies.
What might be the problem?

A.
The cruise control is within its learning period.

B.
The Unisphere QoS control engine did not start.

C.
The queue depth was set improperly.

D.
The IOPS limit for the application was set too high.