Today at Microsoft’s TechEd conference in Orlando we learned just how serious Microsoft is about rapidly grabbing hypervisor market share from VMware. They introduced Hyper-V Server 2012. A free stand-alone Hyper-V server delivered via downloadable ISO.
Some readers will say “So what, VMware has their free version of ESXi 5.0, what is the big deal?” The big deal is Hyper-V 2012 is enterprise class.
Let’s compare:

VMware ESXi 5.0 (free version) Microsoft Hyper-V 2012 (free)
Scale Scale
Limited to 4 vCPUs in VM Up to 64 VP per VM
Total RAM limited to 32 GB Up to 4 TB of memory per Host RAM
Up to 1 TB of memory per VM
No Enterprise features Enterprise level features included
No vMotion Shared Nothing Live Migration
No Storage vMotion Live Storage Migration
No High Availability High Availability via Clustering
No VM Replication Hyper-V Replica (unlimited VM replication)
Storage Spaces
Much more….


Hyper-V 2012 will be a popular solution for customers and service providers looking to provide Linux VM consolidation, to deploy a Virtual Desktop Infrastructure or to provide a hosting platform.
To make it all easy, Microsoft also announced, today, a Virtual Machine Convertor Beta that will convert VMware virtual machine to Hyper-V VMs, making it easy for VMware customers to evaluate Hyper-V. The convertor will:
• Convert VMs, virtual disks and configuration from source to Hyper-V
• Uninstall the VMware tools on the source VM and install Hyper-V Integration Services as appropriate
• Include an easy-to-use wizard-driven GUI to simplify the process
Microsoft is serious. They want VMware customers to move to Hyper-V. Hyper-V Server 2012 may give those customers a compelling reason to make the switch.