Video Performance Decreases With Hyper-V Installed Servers
I am back again with a different kind of problem which I faced with one of my clients. My Customer was having a Windows 2008 R2 server with 3 Guest operating systems running Windows 2008 Server Member Servers. The Problem was when ever my customer was running a video file on the server the performance of the server went down completely though the CPU spikes showed normal behavior and memory was not consumed but still the Operating System's behavior unexpectedly sluggish. After trying different methods I noticed that the issue used to happen when ever graphic Intensive Applications were run on the server. At last I completely removed the driver and tried it again and all of a sudden the server started behaving normally which made me very much sure that the Hardware Drivers is causing a problem. So I tried to update the VGA drivers on the server from the vendors website but faced the same problem. I started searching on Internet and found !!! Guess What ??????????????????
When you enable the Hyper-V role in Windows Server 2008 or in Windows Server 2008 R2, do not install the drivers for high performance accelerated graphics adapters.
I know its very weird but unfortunately its the HardCore truth that Windows 2008 R2 Hyper-V enabled server doesn't supports the high performance accelerated graphics adapters. Please see this newly released KB article.
http://support.microsoft.com/kb/961661
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