You can have a VMM environment Highly-Available not only from a host perspective (meaning live migration of the VM with VMM installed) but you can get HA also at the application level, in case there are issues with OS inside the VM, VMM starts on the other node. You can have two or more SCVMM Management server in a cluster, but only one node will be active.
Before you start the installation of VMM there are some prerequisites:
- Create a VMM Service Account in Active Directory which has to be added to Local Administrators Group on the servers where VMM will be installed.
- Install two VMs for VMM with Windows Server 2012 R2 and configure the Failover Cluster feature .
- Install all the VMM prerequisites: ADK and SQL Native Client.
- Create a Container in AD DS for Distributed Key Management because VMM stores Run As Accounts in its database to manage VM hosts, file servers, VMs and other credential required resources.
- Highly-Available SQL Database is preffered.
For creating the Container in AD you have to follow these steps:
- Open Active Director Service Interfaces Editor (adsiedit.msc), right click the ADSI Edit object and select Connect To
- Connecting to Default Naming Context is enough in most of the environments
- Expand the connection object and right click the domain’s container and choose New – Object
- Select container as the class and Click Next.
- Provide a valuer for the name of the container (VMM for example) and click finish
- Right-Click the container and select Properties and copy the distinguishedName property which you’ll need later during the installation of VMM
After you configure the Failover Cluster feature on the VMs where VMM Management Server will be installed you can proceed with the installation of VMM.
After that, the installation continues almost in the same was as for a Standalone VMM Server, except for the Distributed Key Management screen and the VMM Cluster role where you have configure a name and an IP Address
After the installation is finished on the first node you can run the setup on the second node. The setup will see the cluster and the VMM Cluster role and will ask you if you want to add this node to the current installation.
After the installation is finished don’t forget to install the latest Update Rollup for System Center 2012 R2 Virtual Machine Manager.
Hope this will be useful and will help you to install Virtual Machine Manager 2012 R2 in a Highly Available mode.