SC VMM Error 803 after restoring a duplicate VM with alternative name

I was at a customer today testing some backup/restore scenarios with their backup providers software and where we got an interesting error: 803 “Virtual Machine restore-Test5_gen1 already exists on the virtual host other cluster nodes” Recommended Action: “Specify a new name for the virtual machine and then try the operation again”



In the Backup/restore console we wanted to do a restore to alternative place and an alternative name as we had not deleted the original VM (for instance if you need files or just verify some state or something), in the configuration of the restore job we checked that the restore process would create a new VM Id which was the first thing we thought that was why VMM complained.

The thing was that this error only appeared when we did a restore to another hyper-v host, if we restored to the same where the original VM was residing there was no error..

As you can see after the restore both the original VM and the alternate had the same “#CLUSTER-INVARIANT#” id but different VMId´s, and when we tried to refresh VM´s we got the error above.

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The solution was not so farfetched and can be read about in the KB2974441 although that case is about RDS VDI but still, and as can be read about why the ID is in the notes field from the beginning: “VMM adds a #CLUSTER-INVARIANT#:{<guid> } entry to the description of the VM in Hyper-V. This GUID is the VM ID SCVMM uses to track the VM.”

For the VM not showing up in VMM console we just went into the notes field on Hyper-V Manager and removed that specific “#CLUSTER-INVARIANT#” id and after that VMM generated a new for that VM and it appeared in the VM list on the VMM server.

So why was it no problem when we restored to that same host? For some reason VMM managed to see the duplicate residing on the same host and generate a new id in the notes field for that and thus appearing in the VM list without any massage..


Hyper-V Powershell module now with 211 cmdlets in build 10041

I have upgraded my windows 10 to the latest build 10041 and activated Hyper-V.

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In this build I can see that there are now 211 cmdlets in the hyper-v PowerShell module:

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And comparing it to the PowerShell module that was released in Windows 8.1/2012 R2 you can see the following new cmdlets, although the Windows 10 is in preview and things can change before it is released!

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I will dig into the new preview release and maybe there will be a followup post on my findings!

Review of the new 5nine Manager 6.1

I have used both Hyper-V Manager and System Center VMM from the early beginning of Hyper-V in 2008. If you wanted to use a tool with several Hyper-V hosts either that was standalone or in cluster you had to use VMM, especially if using the deploy functionality with templates and OS customization.When System Center 2012 was released they decided to sell it as a whole product with different roles which means you have to buy either a System Center Standard (for single managed server hosting up to 2 VM´s) or a System Center Datacenter (Virtualization hosts using 2pCPU with unlimited managed VM´s on that licensed host). There are though some alternative and one of them is the 5nine Manager.


5nine Manager has been evolving for some version since they first saw daylight and now they have added some really cool features making it a real competitor to VMM and if you do not use the other System Center roles this could be a good buy.

part of the new 6.1 version, these new features exist:

  • Graphical Monitoring Plugin and Alerts 
  • New Optimizer Notifications 
  • Increased Scalability through Multiple Console Instances 
  • Simplified VM Management with Sortable Table Parameters 
  • Enhanced VM Templates 
  • Integrated Sysprep Tool 

The gui can be run on a Hyper-V Core server so no excuse here now to not use that for your virtualization hosts! I actually have had some discussions with customers why they do not want to run core because if the host would be disconnected and they would need to do some debug and analysing they thought that it would be to difficult when using core instead of the full gui. With the 5nine Manager you can manage and check your VM´s in a GUI but within the Core session 🙂

To get it working in your environment you need to install it on a Windows box. The nice thing here is that you can run it on a Windows 8.1/8/7 and connect to the different Hyper-V versions.

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Once installed you need to add Hyper-V hosts/clusters to manage them.

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The GUI in the console is quite easy to use and as you can see, I can right click on a VM and convert it as a template to be able to provision new VM´s. Another really nice feature which you can see in the list is “Set IP address” and this uses the functionality of the integrational services and sets the IP on the vNic inside the VM!!

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 And as you can see there are some more options in the bar with optimizer,monitor, reporting best practices and Hyper-V logs. I really like the GUI and that it is easy to find the different options and tasks not having to jump around between different views forever. Having a single pane of glass when searching Hyper-V hosts for failing VM´s or hardware issues through logs then this Manager is great.


As described above, If you do not use more than System Center VMM in your virtualization environment and the list price for System Center R2 Datacenter is about 3600 $ and the 5nine Manager would cost from 199 $ per host then there is not so much to argue about! There is also a free version of the 5nine Manager that you can use combined with VMM on your Windows Hyper-V Core hosts.

Unitrends Enterprise backup v8.0 for Hyper-V

I have been looking at some different backup software solutions and now the turn has come to check out Unitrends Enterprise Backup.

They have a new version 8.0 that supports not only VMware but also Hyper-V virtualization platforms and also several different OS such as Mac OS and HP-UX, which can run in physical or virtual machines. There are either virtual or physical appliances of the backup solution so it is quite easy to get the backup solution up and running as you can start with the virtual appliance and get into a protected state within just an hour or so. And if you start with a virtual appliance you can later add a physical at another site and use it as a replication target.

Some nice features are:

  • Unitrends Bridge for Hyper-V, with:
    • Windows Instant Recovery from any physical or virtual guest to a Hyper-V VM.
    • Hyper-V Instant Recovery – running a hypervisor level backup instantly from the backup storage.
  • NDMP support for enterprises.
  • Support for Mac OS 10.9 and HP-UX 11.
  • Guest level protection for Shared VHDXs.
    • Note this is an important feature of 2012 R2 for HA that Unitrends can support and other Host OS backup solutions cannot because you cannot do hypervisor level backups of this config.
  • Improved SQL performance and deduplication.
  • Unified Baremetal.


I wanted to test and see how easily I could get it up and running on my Hyper-V environment and how can I could use it for moving VM´s/workloads from physical or VMware?

First of all you download either an iso or an vhd packed as an EXE from the web page and then you deploy it to an hyper-v host:

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Then when it has been deployed, it has to be configured with IP and other settings and once that is completed you can test and see that you have succeeded with the right settings:

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One important thing is when deployed as a virtual appliance, add vhdx´s to store the backups on, as usual it is quite smart to think twice where you put these and not in the same storage as the protected VM´s as the idea is to survive if you have a failure :-). Initially when the appliance is deployed it has a system disk on a vhdx that is dynamic and can expand to 200 GB.

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The Console GUI then is accessible through a flash-enabled browser and it is really easy get started. As you can see on the following screen dump you can add several appliances and use them either as a local backup system or a vault:

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After initiating and installing the agent on the Hyper-V host I could see it in the console and also see all VM´s running on the host:

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First off I tested to backup and restore a simple VM, which of course worked flawlessly:

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And then I wanted to test to backup and restore a generation 2 CentOS VM:

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Last off I wanted to test the functionality of instant recovery and doing a v2v from vmware to hyper-v. I installed an UEB agent in the OS on the VM in the VMware VM and configured instant recovery in the UEB console to a Hyper-V host.

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The Unitrends Enterprise Backup is really easy to get started with and you are instantly up and running with your backups of the virtual and also physical environment from one virtual backup appliance. With the different features you can use it for both backup and also for instant recovery. Only thing I would like to see is that the flash GUI would be exchanged to a full HTML5 GUI instead, and of course a PowerShell module would make it complete 😉