We have just setup a new Hyper-V situation on a Dell R730 and we are having a problem with (what seems to be) network connection from 1 VM to the other. Both VM's and the host are Server 2012 R2, 1 Fileserver and the other one is a terminal server. On the terminal server there are 2 application that use database files on the Fileserver. After some time (can be 30 minutes sometimes 2 hours) the application give an error about losing network connection to the database. The share where the database is saved is still available and if you restart the application it works fine again.
Both VM's are on the same virtual switch, ping from the TS server to the fileserver shows no loss at all.
We also have a old desktop machine (Win 7) still running with the same application that use the same share, they never lose the connection so it seems that the problem is in the traffic between the 2 virtual machines or on the terminal server itself.
Is there anyone that can maybe point me in the right direction?