A customer has the following storage configuration for a specific application:
– Symmetrix VMAX 4 engine with 128 GB cache per engine
– SRDF/A with two 1 Gbps links to remote site
– 4.2 TB of logical volumes configured for SRDF/A replication
– SMC / SPA installed for storage management
The customer is periodically experiencing high response times for the application.
How can the customer use SPA to determine the potential cause of the high response times?

A.
View Directors BE % busy versus Directors FE % busy

B.
View SRDF/A device write pending count versus system write pending count

C.
View Ports FE throughput in Kbps versus Devices Kbps read + Devices Kpbs written

D.
View RDF-Group (group number) rewrites per sec

Explanation: