A customer tells you that their CX340 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.
Conduct Navisphere Analyzer analysis to examine cache utilization
B.
Conduct System Monitor data collection on the Exchange server overnight for analysis the next day
C.
Determine if the file server metaLUN is sharing physical disk(s) with the Exchange LUNs
D.
Verify that the File Server LUNs are offset by 128 blocks to optimize Windows performance