The following is a primer on managing virtual hard drives using Hyper-V manager. Virtual hard disk files are stored as either .vhd or .vhdx files which use .avhd and .avhdx differencing disks respectively for snapshots. Both formats support either fixed size or dynamically expanding. The .vhdx format is new as of Server 2012 and provides some improvements over the previous .vhd format including increased storage capacity.
For a list of changes in the VHDX format, see http://technet.microsoft.com/en-us/library/hh831446.aspx
All examples are performed using Hyper-V 3.0 on Windows Server 2012 (minimum version required).
Continue reading VHD Management
Once you have gone through the lengthy and specific requirements to install and get VMM running (See http://technet.microsoft.com/en-us/library/gg610592.aspx for all the requirements), added your physical servers to a host group for management, and configured networking ‘fabric’, you can use VMM to perform live migration between your servers running the same version of Hyper-V.
Note that starting in Hyper-V 3.0 VMM is no longer needed to perform live migration; they can be initiated directly in Hyper-V manager.
This guide assumes a pre-configured VMM, server, and network infrastructure (see the technet article for more information).
Continue reading Migrate a virtual machine using System Center Virtual Machine Manager 2012
After previously having to use System Center Virtual Machine Manager for live migration of VMs, it is now possible to set up Hyper-V 3.0 for live migration directly through the Hyper-V manager console.
Continue reading Performing Live Migration with Hyper-V Manager
Here are some simple instructions on setting up your Hyper-V environment for failover. You will require at least 2 physical machines running Windows Server 2012 with the Hyper-V 3.0 Role installed. For this configuration they need to be members of the same domain and connected within the same subnet.
Continue reading Configuring Replication for Failover in Hyper-V 3.0 and Windows Server 2012