Help please - CC3 network + vmware
Last week I have update to newest version of Vmware esx, it is now 4.1. We have 3 DC running CC3. Upgrade went fine, last week (half term) no problems there.
Yesterday the server where all pupils are stored have very high CPU usage, in task manager shows only as system, it can go to 90%. It slows down login process for pupils, really badly. Only this server is affected, other server is for teaching staff and no problem there.
Just to test it I have uninstalled vmware tools and restart it, just to check if it was that. But running without did not improve much. Today was fine till period 2 and it went again - so it is really spiking up when users are logging in.
Event log does not show any major errors.
Can't figure it out, bit lost here.
Does any one have ideas what could go wrong?