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Issues when trying to add a single-node cluster under management in VMM

A few folks have been experiencing errors and long delays in adding a single-node (i.e. a 1 node cluster) cluster under management in Virtual Machine Manager. This issue stems from the fact that VMM has an overcommitted property for each cluster. By default, Read More...
Posted Friday, November 27, 2009 1:33 PM by mlmich | (Comments Off)

Using the VMM Self Service Portal from a Win7 computer

We have seen a lot of cases of customers trying to view the Virtual Machine Manager Self-Service Portal (SSP) UI from a computer running Windows Server 2008 R2 or Windows 7. If the portal is running VMM 2008, it is likely that you can't view the connections Read More...
Posted Saturday, April 04, 2009 5:49 PM by mlmich | (Comments Off)

Issues with adding a host to VMM when the computer has more than 16 processors

It has come to our attention that trying to add a computer with more than 16 processors (for example a quad six-core machine with 24 processors) is crashing the VMM server with the following exception: System.InvalidOperationException: Nullable object Read More...
Posted Monday, February 09, 2009 10:58 AM by mlmich | 3 Comments

How to enable server-optimized garbage collector for VMM

If your VMM implementation has over 150 hosts, we strongly recommended that you enable server-optimized garbage collector (GC) on the VMM server instead of the default workstation garbage collector. This can significantly reduce the CPU utilization on Read More...
Posted Wednesday, February 04, 2009 10:38 AM by mlmich | (Comments Off)

Azman permissions for VMM-managed Hyper-V hosts

When VMM starts managing a hyper-v host, it takes full control of the Azman XML file that contains the permissions for Hyper-V. In fact, VMM will create a new copy of the file in a separate directory location and point hyper-v to that file (the file name Read More...
Posted Monday, January 12, 2009 12:18 PM by mlmich | 1 Comments

Getting an incorrect SAN migration option during clone-vm in VMM

If you have a Failover Cluster managed by VMM 2008, it is possible that you will get a placement page similar to the one below if you try to clone a Highly Available Virtual Machine that is part of the cluster. The placement page in the new-vm wizard Read More...
Posted Thursday, December 11, 2008 11:20 AM by mlmich | (Comments Off)

Highly Available Virtual Networks and VMM

We had a few customers ask us to clarify high availability (HA) with regards to Virtual Networks (VN). In the VMM/Clustering case, there are a few considerations around virtual networks: A VN to be considered HA has to have the same exact name in all Read More...
Posted Monday, November 10, 2008 6:46 PM by mlmich | 1 Comments

How to upgrade between the different SKUs of VMM 2008

Now that VMM 2008 has RTM'ed, a lot of folks are asking what are the upgrade paths between the various SKUs of VMM. I wanted to list two upgrade paths here and the associated process around this. Upgrade Paths supported by this method when the build number Read More...
Posted Wednesday, October 22, 2008 11:01 PM by mlmich | 1 Comments

Did you encounter an issue with VMM 2008 beta when you upgraded to Hyper-V RC1

A lot of you have been experiencing issues when you upgrade Hyper-V to RC1. I would like to reiterate that the VMM team knows about this and we apologize for the inconvenience. See this thread on technet forums for more details. http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=3373834&SiteID=1 Read More...
Posted Thursday, May 22, 2008 1:29 PM by mlmich | (Comments Off)

dealing with VMM error 2917 : "The network path was not found"

This error is one of the most difficult to diagnose errors in a customer environment. If you are hitting this issue when trying to install the VMM server component, here are a few things to try out. -First, run "gpupdate /force" on your VMM server and Read More...
Posted Friday, April 18, 2008 2:23 AM by mlmich | 1 Comments
 
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