ProvideX File Server High Disk Utilization

We are currently running ProvideX File Server file version 4.21.1000.0 to access a database located on the same server through an ODBC connection. The server is a VMWare Windows 2008 R2 server connected to a Dell 1200 array with 15k sas drives. When users try to access that entire database for reporting the Hard Disk utilization goes to 100% with the pvxiosvr.exe process reading the drive. Are their some adjustments that can be made so that this doesn't occur. This slows the entire server.