A customer has two EMC VNX, one at the primary site and the other at a DR site located 100 km
away. The WAN connection between sites is a 100 Mb/s dark fiber link with 4 ms latency.

A previous storage administrator configured the pool LUNs for the file system on thin LUNs. The
file system is growing at a rate of 500 GB per week and is on a VDM. The new storage
administrator reports performance issues with the file system.
What is the most likely reason for the performance issue?

A.
Thin LUNs are used for the file system.

B.
The WAN link should be upgraded to an eLAN.

C.
The VNX system requires an upgrade.

D.
The file system has too many concurrent users connected.