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…

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?