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Host has exceeded the configured Maximum number of running VMs

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I had to wonder what I was reading when I came in this morning. I saw an alert from one of our Windows 2008 R2 Hyper-v hosts

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Subject: Alert: Host has exceeded the configured maximum number of running VMs Resolution state: New

Alert: Host has exceeded the configured maximum number of running VMs

Source: hostserver.mydomain.com

Path: hostserver.mydomain.com

Last modified by: System

Last modified time: 7/24/2013 6:05:16 PM Alert description: The number running virtual machines has reached 728 on hostserver.mydomain.com, and the host has exceeded the configured maximum number

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Not sure what to make of the number of VMs that SCOM thinks is on the host. There's only 8 VMs at any given time. What on earth would trigger this alert? We're running Hyper-v Management Pack version 6.0.6633.0.

Orange County District Attorney
- Edited by Sandy Wood Thursday, July 25, 2013 2:30 PM typo
Thursday, July 25, 2013 2:29 PM

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Hi,

I would like to suggest you check the related monitor and adjust the parameters with override to see if it works.

Thanks.
Nicholas Li
TechNet Community Support
- Marked as answer by Sandy Wood Friday, July 26, 2013 2:19 PM
Friday, July 26, 2013 4:54 AM

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Hello Sandy,

It seems that this error is known by Microsoft

See this KB : http://support.microsoft.com/kb/2686249/en-us

This update concerns 2012 but an equivalent must be available for 2008 R2 I think.

The KB2663961 correct the problem :

Issue 5

The “Host has exceeded the supported maximum number of running VMs” alerts are triggered even though the host has not exceeded the maximum number of running virtual machines.

Regards

Nicolas
- Edited by Nicolas SIBILLI Thursday, July 25, 2013 2:50 PM Syntax
Thursday, July 25, 2013 2:45 PM
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Thanks for the note back. Our SCOM installation is at SP1 with CU2. It looks like KB2663961 was released in CU1 for RTM if I'm not mistaken. Maybe the fix was just for 2012.
Orange County District Attorney

Thursday, July 25, 2013 4:14 PM
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Hi,

I would like to suggest you check the related monitor and adjust the parameters with override to see if it works.

Thanks.
Nicholas Li
TechNet Community Support
- Marked as answer by Sandy Wood Friday, July 26, 2013 2:19 PM
Friday, July 26, 2013 4:54 AM
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Thanks Nicholas. We adjusted it with an override. That solved it (sort of) for us.
Orange County District Attorney

Friday, July 26, 2013 2:19 PM