ABC.com tells you that their CX3-40 has suddenly developed a performance problem. Yesterday,
they added a file server to the SAN and created a metaLUN from unallocated space in the array to
provide the capacity needed for their file shares. Now, their Exchange server is experiencing
higher than normal disk queue lengths and performance is degrading rapidly.
What is the first thing you should have the customer investigate before calling EMC Support?

A.
Determine if the file servermetaLUN is sharing physical disk(s) with the Exchange LUNs

B.
ConductNavisphere Analyzer analysis to examine cache utilization

C.
Verify that the File Server LUNs are offset by 128 blocks to optimize Windows performance

D.
Conduct System Monitor data collection on the Exchange server overnight for analysis the next
day