We have been managing a HP Proliant ML350 running Microsoft Server 2012 R2 with Hyper V running two Server 2012 Servers, One DC and One Exchange 2013.
It has two nics (Intel) One setup for Hyper V Host + Management and the other for vmswitch for virtuals.
Nearly every morning when staff come into the office the server stops responding on both nics. No ping no response. If we then either disable the network cards and re-enable the server come back to live.
We have replaced the switch the server connects to but the problem still occurs.
There are no errors in the event log at all and no hardware errors with the hp insight log. The switch records nothing either.
The virtual machines show no internet access on the network when this occurs.
We can also connect to the server via ilo during this time.
Really banging our heads against a wall on this one.
any help will be appreciated.