ActiveXperts Network Monitor 2015 proactively manages network servers, devices, databases and more.

Microsoft Resource Kits - Windows 2003 Resource Kit

Filespy.exe  (Windows 2003 Resource Kit)

The Window Server 2003 Resource Kit is a set of tools that system administrators and engineers use to manage or support a Windows Server 2003 system. Use it to streamline management tasks such as troubleshooting operating system issues, managing Active Directory, configuring networking and security features, and automating application deployment.
Filespy.exe - File Spy
This tool allows you to monitor both local and network drives to see what types of I/O Request Packets (IRP) and Fast I/O operations are executing in the system. It is a general-purpose diagnosis tool for anyone who wants to understand the file activity in a system. FileSpy aids Installable File System (IFS) filter driver writers in understanding the I/O that is occurring in the system. FileSpy was developed as a useful example of how to write an IFS filter driver. This driver sits in the I/O stack and records the relevant information for the I/O operations that are happening, such as the starting time, the completion time, and return status.