Basically I am trying to find out where the difference in the rate of a network file copy might come from.
I have a virtual Server 2008 R2 SP1 and a virtual Server 2003 R2 SP2, using the same store, same amount of CPU and RAM. They are also on the same host running ESXi 5.5. New install on both, just installed all updates and joined the domain. Everything is on gigabit. They are both using vmxnet3 and the iscsi paravirtual driver.
When I copy a 4gb file from my windows 8.1 PC to the Server 2003 R2 machine I get this:
When I copy the same file from the same computer to the Server 2008 R2 machine I get this:
Why is the transfer to the Server 2003 R2 machine so much slower?