First some background on our setup...
1. Dell server running Windows 2012 R2 with all latest updates applied. The server has a Broadcom Gigabit Ethernet card (quad port). Currently IP v6 is disabled as we do not use it. The Windows environment is a host environment currently with one virtual server.
2. Other old servers all running Windows 2003
3. All servers and workstations are plugged in to Netgear ProSafe 24-port Gigabit Smart Switch.
That all said, our challenge is that the performance of the network throughput seems very slow on the virtual server. Check out the attached screenshot. This screenshot represents the activity on the virtual server when we are migrating one user mailbox from the old mail server over to the new mail server (which is the virtual server). The highest peak for a short period of time goes to the 7.7 Mbps mark but generally speaking the entire process appears to be very slow for a gigabit environment
Any suggestions on what to check to improve the network performance of the W2012 server?