Hello,
I have a Dell PowerEdge T620 with Intel I350 gigabit nics. The server and the nics have all the latest firmware and drivers.
I have each VM on its own dedicated network Virtual switch so there is a quad nic in the server and each VM has a dedicated nic.
The VMs say they are connected at 10Gbit.
When I try to copy between 2012 servers (VM to VM or VM to Host) the fastest I get is about 50 MB/s
When I try to copy between 2012 and a 2003 VM to VM I get about 2 MB/s. The 2003 server has the latest integration services installed).
I have only IPV4 enabled. We are not using IPV6 so it is disabled.
The server that they are on has VERY fast arrays (two RAID 50 - different controllers). If I copy from one array to another I can see about 500 plus MB/s