Hyper-V notes from the field

Errors discovered during backup of VHDS in guest clusters

Hi, with Windows Server 2016 we introduced VHD Sets to create a shared virtual disk to be used with...

Author: robertvi2 Date: 11/08/2017

Compliance Scan from SCVMM fails with Error (2927)

Hi, recently, I had some occurrences of the following error while scanning the compliance state of...

Author: robertvi2 Date: 12/09/2015

Verify all SCVMM Host Agents are up to date

Hi, now that UR8 is available, I modified my script slightly to also check if the DHCP Extension is...

Author: robertvi2 Date: 08/07/2014

Achieving over 1-Million IOPS from Hyper-V VMs in a Scale-Out File Server Cluster using Windows Server 2012 R2

Hi, I'd like to point you to a Whitepaper from your Development Group that impressively shows how to...

Author: robertvi2 Date: 05/26/2014

Building a teamed virtual switch for Hyper-V from SCVMM

Hi! A common question today is how to setup your cluster blades with (10GB) Ethernet connections....

Author: robertvi2 Date: 10/25/2013

Using Port ACLs in Hyper-V 2012

Hi, recently, I had an issue where it was needed to carefully control which machines can talk to...

Author: robertvi2 Date: 07/03/2013

Howto move a Linux VM from Vmware to Windows Azure VM

Hi, I just had a interesting task I'd like to share: Customer had some Linux CentOS 6.3 VMs running...

Author: robertvi2 Date: 03/14/2013

Hyper-V Powershell module not installed during Bare Metal Deployment

Hi, I just had an issue that my 2012 Hyper-V Hosts did not have the new powershell commands...

Author: robertvi2 Date: 11/28/2012

RedHat 6.3 VM may loose Network connectivity after a live migration

Hi, recently, I had an issue with a RHEL 6.3 VM with the latest Integration Components 3.4. After...

Author: robertvi2 Date: 11/20/2012

Raising Assigned Memory on Demand on Hyper-V

Hi, I'm using Dynamic Memory for all my VM's and tend to start low (512MB). However, it happend to...

Author: robertvi2 Date: 10/22/2012

Windows 8 Beta allows to import a VM from plain files.

Hi, this is a "WOW" feature for me that I found not to be documented. Until now you could only...

Author: robertvi2 Date: 03/07/2012

Windows Server 8 beta available

Hi everyone, besides the Consumer Preview of Windows '"8", there was also a beta version of Windows...

Author: robertvi2 Date: 03/05/2012

Service Templates in VMM 2012

As VMM 2012 is almost complete, I started to upgrade to the RC Version. I thought I’ll share...

Author: robertvi2 Date: 01/03/2012

Time Drift in VM

Recently, we worked on an issue with time drift in a VM, and my colleague Johann Binder had an...

Author: robertvi2 Date: 11/11/2011

Problems with Live Migration

Hi, today my collegue Bernd Högen has interesting finding that he would like to share:...

Author: robertvi2 Date: 06/07/2011

Time Synchronization and Domain Controller VM's

Hi, often, I’m getting asked how to configure Time Synchronization for Hyper-V VM’s that...

Author: robertvi2 Date: 05/11/2011

Recent fixes that address slow network throughput on Hyper-V

Hi, Recently, I’ve been working on several issues where customers reported poor network...

Author: robertvi2 Date: 04/19/2011

How does a NIC inside a VM get a MAC address assigned?

Hi, If you add a NIC to a VM, it needs a MAC address that should be unique (at least in the network...

Author: robertvi2 Date: 03/25/2011

What does "Enable heartbeat monitoring for the virtual machine" do ?

Hi, I've been asked this a couple of times, and thought it might be interesting to blog.. If you...

Author: robertvi2 Date: 01/11/2011

A script to check the Integration Services Version on Hyper-V Host and Guests

Hi, Scripting time again! Really often, I need to check if the Integration Services Version of the...

Author: robertvi2 Date: 10/11/2010

A powershell script which balances the load of Hyper-V VMs across all cluster nodes

Hi everyone, I run a 2 node cluster with Hyper-V. While debugging and testing, i often have to...

Author: robertvi2 Date: 10/07/2010

When would I need to limit the processor features so that Quick or Live Migration is possible

Hi, Recently, I had some customers which could not Quick or Live Migrate their VMs in a Hyper-V...

Author: robertvi2 Date: 07/22/2010

Error Message: The server encountered an error while creating “Name of the VM”

Recently, I worked on the below issue and though this might be worth to blog: On a Hyper-V Server,...

Author: robertvi2 Date: 06/08/2010

Hyper-V: Live Migration Network Configuration Guide

Hi, we just release a guide on how to configure your Network Cards with Hyper-V...

Author: robertvi2 Date: 02/26/2010

VHDTool - a must have.

This tool saved me lots of time. So I thought I point you to it:...

Author: robertvi2 Date: 02/25/2010

Getting some more info about my .vhd and .avhd files.

I often have the need to get more info on the .vhd and .avhd (Snapshots or Differencing) files. I...

Author: robertvi2 Date: 12/17/2009

Availability of Hotfix Rollup package for System Center Virtual Machine Manager 2008 R2

Update: Meanwhile there is a further Februar Rollup available: Description of the System Center...

Author: robertvi2 Date: 12/17/2009

Quick or Live Migration may fail after you used Migrate Storage

SCVMM R2 has a nice new feature to migrate the storage location of a VM. The move is done on one...

Author: robertvi2 Date: 11/13/2009

Installing SCVMM on a host with a name containing "-SCVMM-" fails with Error 257

Well, the title says it all. If the host you're trying to install SCVMM on has a name that contains...

Author: robertvi2 Date: 11/05/2009

SCVMM 2008 Error (2927) A Hardware Management error has occurred trying to contact server

I had a large customer where some Host occasionally where reported with an Error during Host...

Author: robertvi2 Date: 10/23/2009

BITS Compact Server cannot process the request for the following URL in the %1 URL group: %2. The request failed in step %3 with the following error: %4.

Hi, Windows Server 2008 R2 has a new feature component: Bits Compact Server! This is a lightweight...

Author: robertvi2 Date: 10/20/2009

After installing Hyper-V Integration Services on the next reboot the VM displays BSOD 0x0000007B

Hi, Recently, I had some customers with VMs they just P2V'ed, or even had them running already on...

Author: robertvi2 Date: 10/07/2009

My Recommended Fix List Post SP2

While Service Pack 2 contains many fixes that I recommended earlier, I intend to post here some...

Author: robertvi2 Date: 07/17/2009

SCVMM Service may take up lots of memory

In a large SCVMM environment we noticed that the SCVMM Service (vmmservice.exe) allocates lots of...

Author: robertvi2 Date: 05/25/2009

Availability of Hotifx Rollup package for System Center Virtual Machine Manager 2008

Recently we published a Rollup for System Center Virtual Machine Manager 2008 on Microsoft Update....

Author: robertvi2 Date: 04/17/2009

Virtual Machine "Disappears" from Hyper-V Manager or changes to a VM cannot be applied

Recently I saw some strange errors: - A complete VM was not listed in Hyper-V Manager anymore. -or-...

Author: robertvi2 Date: 04/07/2009

During Quick Migration the Virtual Machine Configuration resource stays in "Offline Pending"

I have seen this at a customer site. Whenver one VM was moved from one node to the other, it took...

Author: robertvi2 Date: 03/25/2009

SCVMM P2V conversion fails during 'Make operating system virtualizable'

You may run into the problem that a P2V conversion to a machine with an IBM SAN using an older...

Author: robertvi2 Date: 03/17/2009

A Windows 2000 VM may perform badly and consume high CPU

Just had a couple of issues where a Windows 2000 VM was apparently slow and consumed >80% CPU....

Author: robertvi2 Date: 03/17/2009

SCVMM error 3217, SP2.cab missing

Today, an issue with System Center Virtual Machine Manager. If you try to convert a physical machine...

Author: robertvi2 Date: 02/06/2009

Comprehensive List of Hyper-V Updates

I'm often getting asked for paritcular fixes required for Hyper-V . There is a comprehensive list...

Author: robertvi2 Date: 02/02/2009

Howto manually add a VM Configuration to Hyper-V

With Hyper-V you cannot simply „Add“ a configuration file to your Hyper-V machine as you...

Author: robertvi2 Date: 12/19/2008

Error Applying New Virtual Network Changes

When you create a new switch and assign it a pyhsical Network card, you might see this error. Error...

Author: robertvi2 Date: 12/18/2008

E-Book on MS Virtualization Solutions

Just got a link to this free edition. It covers Hyper-V, SCVMM, MED-V and more. I browsed the...

Author: robertvi2 Date: 12/18/2008

My modifications to InitialStore.xml don't seem to take effect

I wanted to allow a colleague access to my Hyper-V. Following the instructions at...

Author: robertvi2 Date: 12/08/2008

HowTo monitor the NIC used by a Virtual Machine in a Hyper-V cluster

Recently I had a customer with the following problem: Hyper-V Host Clusters don't support NIC...

Author: robertvi2 Date: 12/05/2008

A clustered Virtual Machine may end up on the wrong switch after move

When you have a VM clustered on multiple Hyper-V Hosts it is necessary that the machine...

Author: robertvi2 Date: 11/21/2008

When do I use the Legacy Network Apater

When you configure a new VM you have the option to add a "Network Adapter" or a "Legacy Network...

Author: robertvi2 Date: 09/25/2008

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