slow virtual machines after upgrade to vsphere 4.1

[bnk]

We have 6 vSphere 4.1 servers that are run on dell PowerEdge 2950.

Before we had vSphere 4.0 installed, but reinstalled all the servers, so we did not upgrade.

After the installation of vSphere 4.1, our esx4, esx5 and esx6 servers are working perfectly. 

When we logon a Windows virtual machines on esx1, esx2 and esx3, all vm´s are very slow, but our Linux-servers are running fine?

If I move a windows server from, let’s say esx1 to esx5, it all works again.

When I move it back it becomes slow again.

Everything seems to be ok, but they are very slow

Dows anyone knows what ì can do to fix the problem?

[weinstein5]

Are ESX1,2,3 configured identically to ESX4,5,6? Are all hosts carrying the same load?

[itvmmgrs]

Swap all the network and fiber connections from the known good to the “identical” slower box and retest.  If the slowness goes away, then you know the 2950 is not dysfunctional.

[bnk]

Yes they are all identically configured.

The only difference between the esx servers is that esx1, 2  and 3 are the first servers we bought. Then we bought the rest about 1.5 years later.

So the only suggestion I can find is to update the bios on esx1,2 and 3?

I have moved all virtual machines from esx1 except one.

Even though the virtual machine is very slow.

[idle-jam]

maybe you can run esxtop and see the fault: http://www.yellow-bricks.com/esxtop/

[bnk]

I tried esxtop, but no problems there. 

[Ptitced]

Dear,

I'll add the same issues,

And i solved by upgrading the video drivers on each server with the drivers located here:

=> C:\Program Files\Common Files\VMware\Drivers

I know it can't sound stupid, but it's working like a charme for me.

I've just make the update to VSPhere 4.1, and got the same trouble than you only on one esx.

To solve it, I've update video drivers on one server, test it, and it's working ....

Hope this will work for you, cause I've also spend a lot of time trying to resolve this issues.

If you machine are not in Seven or windows 2008, you just need to set the video hardware acceleration on full

Best regards,

Cédric

[bnk]

I tried that but the virtual machines are still slow. 

[idle-jam]

i would highly advise in getting vmware support help as their screen sharing session would be able to troubleshoot faster

[bnk]

I can now see that the problem is isolated to Windows Server 2003 machines???

[Ptitced]

And have you try the hardware acceleration ?

Start / Control Pannel / Display / Settings / click twie on the screen / troubleshoot / Set Hardware to full

Regards

Ced

[dbrunet]

Hi,

I would like to do the same thing as you did.

Did you solve your problem?

Thank you.

Denis