EMC Exam Questions

How would you explain the peak in response times given the overall performance profile sh

Refer to the Exhibit.

A customer has collected response time performance data from their CLARiiON array. They are experiencing periodic increases in overall array response times. They have created a graph of the data that is displayed in the exhibit.
The customer has a CX340 with 22 Windows hosts and replicates data with MirrorView/A periodically throughout the day. How would you explain the peak in response times given the overall performance profile shown?

A.
Asymmetric Logical Unit Access is misconfigured on the array and causing the SPs to be unbalanced

B.
Failover Mode is not set to 1 for PowerPath, causing unbalanced I/O on the array

C.
Forced flushing of the cache is causing the array performance to spike and gradually return to normal

D.
Copy on First Write activity associated with MirrorView/A is causing an increase in response times