What’s new for Hyper-V in Windows Server 2012 R2

by Arman Obosyan 3. June 2013 21:00

With the release of Windows Server 2012 R2 estimate end of the year a lot of new features will be introduced, one of the first question is What’s new for Hyper-V in Windows Server 2012 R2

Generation 2 Virtual Machines

  • A VM with now “Legacy”
  • UEFI based
  • No emulated devices
  • Boots off virtual SCSI / Network adapters
  • Supports Secure Boot
  • VMs boots seconds faster, OS install much faster

(For now only supported guest OS’s are 64-bit Windows 8 and Windows Serer 2012 and later, you will not be able cannot upgrade a Gen1 VM to Gen2 VM because of UFIE (new bootloader) and use of GPT partition and not MBR to boot.)

Enhanced VM interaction

  • Full remote desktop capabilities, even when the network is down!
  • Integrated into Hyper-V Management experience
  • Virtual machines are automatically activates when hosted on Window Server 2012 Datacenter edition
  • Zero touch activation of VMs for hosters / enterprises
  • Copy and paste rich text and graphics inside hyper-V console!
  • Video and audio over Hyper-V console
  • Copy/paste feature as PowerShell commandlet for non GUI guest
  • USB passthrough can be enabled (GPO) it is tied to "RDP" session of VM remote tool.

Live Migration

  • Live migration VMs from Window Server 2012 to Windows Server 2012 R2
  • 2x to 10x Faster Live Migration
  • Zero downtime migration
  • Compression enables over 2x improvement in live migration time
  • SMB Direct support allows for high-speed live migrations over high-end networks (RDMA)

VHDX / Export / Clone

  • Increase and decrease the size of VHD while VM is live, Online VHDX resize
  • Export VM while it is running, Live VM Export
  • Export snapshot of a VM, while VM keeps running

Storage QoS

  • Can restrict disk throughput for overactive / disruptive VM
  • Dynamically configurable while VM is running

Hyper-V Replica

  • Extended replication, now add a second replica to add extra protection for your VM at offsite location or hoster
  • Finer grained control of replication, now choose 30 sec interval or 5 minutes (default) For other scenarios choose 15 minutes.
  • Windows Azure will support orchestration of recovery using Hyper-V DR replica’s and system center VMM on premise.

More coming…

Note: All listed in this post subject to change, this is prerelease list of features that are planed to be included in upcoming release of Hyper-V with no warranty.

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About the author

Arman Obosyan have more than 20+ years’ work experience in Information Technologies sector.

Last few years he working on a position Technology Strategist at Microsoft Corporation, In the past Arman was Head of IT Infrastructure in Governmental Central Bank of Georgia (National Bank of Georgia).

Nowadays Arman is supporting C-Level and enabling business, visionary with a passion of technology, trends.


Certified since 2003 year, passed following certifications MCP, MCSA, MCSE, MCTS, MCITP, Exin ITIL and VMware Certified Professional (VCP)

Founder / Lead of Microsoft Certified Professionals (MCP) Club Tbilisi and Community GE project 

In 2010 Was awarded a Microsoft Most Valuable Professional (MVP)

2017 MVP Reconnect


The opinions expressed herein are my own personal opinions and do not represent anyone else's view in any way, including those of my employer.

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