Hi All,
I running 4 Windows 2012 R2 server in DELL VRTX.
Server 1 is running as File sharing server.
Server 2 and 3 is running HyperV cluster.
Server 4 is standalone server for testing.
My trouble is when I logon server 4 and copy big file( a iso around 4G) from Server 1 to Server 4, sometimes server 4 network connection will lost. No any error log found in system event log.
Same action in Server 2 and 3 are fine, no issue on them.
I try to monitor in the switch, switch show the network port is healthy and it can send the package to server 4 but no respond. It seems that the server 4 can't receive any package from the network.
I have read http://answers.microsoft.com/en-us/windows/forum/windows_7-files/failure-to-copy-large-files-across-a-gigabit/6343e929-e089-4c56-b86c-216c4202e138 and try to turn off the autotuninglevel.
The problem really gone, now is my question, why Server 4 has this problem? And Why turn off the autotuninglevel can fix the problem?
In this situation, should i also turn off the autotuninglevel in other server?
I really want to know the root course for this problem.