997_13017113876PJ6Didn’t make it to TechEd this year? Don’t worry!  This month, we are releasing a new article that highlights the Best of TechEd every workday.  In today’s article I focus on Hyper-v Replica and the Hyper-v Replica Capacity Planner tool.

Hyper-v Replica is an awesome technology. I often refer to it as poor man’s geo clustering. It is a fantastic DR tool that asynchronously sends changes of a running VM on Hyper-v to another Hyper-v server. This enable you to turn on the other server if there is a problem with the first server. Much faster than restoring from tape!

There are a few new features in Server 2012R2 Hyper-v Replica

  • Resynchronization – How to handle resync automatically
  • Extend Replication to a Third Hyper-v server
  • Change the Synchronization time interval (30 sec to 5 minutes to 15 Minutes)
    (Changes possible loss window and bandwidth needs)
  • Linux VM Enhancements
  • Online Disk Resizing
  • Generation 2 VMs
  • Seamless upgrade from 2012

Capacity Planner for Hyper-v Replica

Just before TechEd we just released a new FREE tool called the Capacity Planner for Hyper-v Replica. This is a great tool which monitors VMs you select. You will want to have it monitor your VMs during typical max workloads so it can analyze how many VMs you can replicate across your network. This is great for planning checking if your WAN can handle the bandwidth without causing WAN congestion.  

Download the Capacity Planner for Hyper V Replica here:

Understanding Hyper-V Replica: Performance, Networking and Automation

There was a great session at TechEd 2013 on Understanding Hyper-V Replica: Performance, Networking and Automation. In this session you can learn about Hyper-v replica planning, bandwidth management, and new features. What is doesn’t have is a basic over view of setup or overview, so you should have a basic understanding first.

Here are some highlights of the session:

  • 15:08 – Demo of the Capacity Planner for Hyper-v Replica tool.
  • 31:30 – Demos how to throttle traffic with Windows Quality of Service
  • 33:00 – Network Compression  works well.
                 My previous post on Network Compression Whitepaper Here:

Session Objectives & Takeaways

  • Overview of Hyper V Replica
  • Infra-structure Planning
    • Introduction to Capacity Planner for Hyper V Replica
  • Deployment Considerations & Automation
    • Monitoring your replication
    • How to failover & failback
    • Automating Hyper V Operations using System Center Orchestrator (SCO)
  • What’s new with Hyper V Replica in Windows Server 2012 R2

The Session recording is available here:


Raghavendran Gururajan  – Principle Program Manager

Charles Joy – Senior Program Manager

When looking at your Disaster Recover procedures take a look at Hyper-v Replica and see how you can improve your recovery time while lowering costs as you insure the continuity of your business.


*** Update*** My coworker and good friend KeithMayer  has a great lab posted on using the Capacity Planner for Hyper-v. Try it yourself!
Guided Hands-on Lab: Capacity Planner for Windows Server 2012 Hyper-V Replica