KB: Networking errors (23801, 23753) when a virtual machine is assigned a static IPv4 address through System Center 2012 R2 Virtual Machine Manager

When you use System Center 2012 R2 Virtual Machine Manager to migrate a virtual machine, the job is completed successfully but one or both of the following errors are returned in the job result information: Error (23801) No available connection to selected VM Network can be found. Recommended Action Ensure host NICs have connection to… Read more

Single VMM Server deployment topologies for Windows Azure Hyper-V Recovery Manager

Business requirements should drive topology decisions. Based on these requirements an organization might choose to have multiple data centers managed by a single management head or multiple management heads managing different data centers. This blog covers how an organization deploy an SCVMM (System Center Virtual Machine Manager) Server while using a single VMM Server to… Read more

How to add an already running VM in Virtual Machine Manager to a Windows Azure Pack Subscription

Microsoft’s Anders Ravnholt posted a great article on how to add an already running VM in Virtual Machine Manager to a Windows Azure Pack Subscription. He covers two common scenarios: Scenario1: “A tenant has signed up a subscription and just migrated 2 Virtual Machines from on premise to service provider environment and as a service… Read more

Adopting Network Virtualization – Part III

Welcome to the third installment of Network Virtualization in Virtual Machine Manager! This series will be an example-based walkthrough consisting of a few parts: Part I: Configuration with VLAN Segregation Part II: VLANs with Network Virtualization Part III: Adding External Connectivity to Virtualized Networks (This post) Part IV: Flattening the VLAN Topology Part V: Expanding… Read more

KB: How to enable debug logging in Virtual Machine Manager

This article describes how to enable debug logging in Microsoft System Center 2012 Virtual Machine Manager (SC 2012 VMM) Service Pack 1 (SP1) and System Center 2012 R2 Virtual Machine Manager (SC 2012 R2 VMM). VMM Event Trace Log (ETL) files provide useful debug logging for troubleshooting many different VMM issues. For all the details… Read more

KB: You can’t upgrade from an evaluation version of App Controller to a licensed version

If you do not provide a product key during Microsoft System Center 2012 App Controller installation, App Controller is installed as an evaluation version. If you later decide to upgrade to a licensed version and therefore rerun Setup, the “Upgrade from evaluation license” link is not displayed as expected. For more details and a resolution,… Read more

KB: How to determine the version of Virtual Machine Manager

This article describes how to determine the version of Microsoft System Center Virtual Machine Manager 2008 R2 (VMM 2008) and System Center 2012 Virtual Machine Manager (VMM 2012) based on binaries and installed updates. To determine whether you have the latest recommended binaries, see Recommended hotfixes for System Center Virtual Machine Manager 2008 R2 and… Read more

Adopting Network Virtualization – Part II

This is the second post in a series about transitioning from using VLANs for tenant segregation to Network Virtualization. This series will be an example-based walkthrough consisting of a few parts: Part I: Configuration with VLAN Segregation Part II: VLANs with Network Virtualization (This post) Part II: Adding External Connectivity to Virtualized Networks Part IV:… Read more

Adopting Network Virtualization – Part I

In this series, I’ll be summarizing the basics of Network Virtualization in Hyper-V using System Center Virtual Machine Manager R2. I hope to clear up some confusion around the network models and help with the adoption of Network Virtualization in your environment. I’m going to be making the assumption that you’re reasonably familiar with physical… Read more

KB: "Error 26184" when you assign a LUN to a cluster in System Center Virtual Machine Manager 2012 SP1

Assume that you’re using an IBM Storwize V3700 device in a Microsoft System Center Virtual Machine Manager 2012 Service Pack 1 (SP1) environment. When you try to assign a logical unit number (LUN) to a cluster, you receive the following error message: Error 26184 The existing storage group for null does not match the storage… Read more