New features in Hyper V 2012 R2
Probably the best feature of this release by my analysis, clustering has always been a complicated subject in VMs. Now we can do this, don’t need to have an iSCSI or FC SAN to do so. Now, you can accomplish this by placing the VHDX on a file server share if you want and share the VHDX that way, thereby significantly simplifying the process and the requirements. Yes we can we can live migrate these VMs also, but storage live migration is not supported.
Replica to Third Site
One of the features that we all loved about Hyper-V is the replica feature, except it was limited to one replica and while that might be sufficient in some cases, I have noticed that most of my customers would always want the ability to replicate a copy locally and a copy to a third site . In some cases, customers wanted to replicate a copy to another datacenter and then one to the cloud. Windows Server 2012 R2 Hyper-V allows you to do just that, enabling enterprises and service providers to satisfy replica needs.
VM Direct Connect
Now VM console connection will enable rich copy and paste, file copy and paste, USB support leveraging RDS technology, all with no network connectivity requirements.
Dynamically Resizing VHDX
Windows Server 2012 introduced version 2 of its Virtual Hard Disk (VHD) format—VHDX—which not only provides performance improvements over VHD by making dynamic mode the default but also greatly increases the maximum size for a single VHDX file from 2TB to 64TB. This means size is no longer a limiting factor to use VHDs or an excuse to use pass-through storage.