Updates from QA Training

Windows Server 2012 Feature #2 Hyper-V 3.0

Having discussed shared nothing Live Migration on Monday today is the turn of Hyper-V Replica, a disaster recovery service inbox with Hyper-V 3.0


Paul Gregory | 18 July 2012

Having discussed shared nothing Live Migration on Monday today is the turn of Hyper-V Replica, a disaster recovery service inbox with Hyper-V 3.0

The Hyper-V Replica feature allows a copy of a virtual machine to be frequently updated with an 'off' copy of the virtual machine.  This enables in a disaster scenario a copy of the virtual machine could be brought online very quickly with little data loss.  This could be used for keeping virtual machines in sync in the following situations:

  • A live site and a DR site
  • Head office/data centre and a branch office
  • Data centre and a hosting provider

The replica is updated between every 5-15 minutes based on the time it took to complete the last synchronisation.  In addition 'previous' versions of the computer can be kept.  During the setup an administrator can define the number of previous versions to be kept and then Hyper-V will then automatically take a snapshot of the virtual machine at 1 hour intervals to maintain the number of copies requested.  For example if the administrator selects 3 copies the replica virtual machine would have snapshots going back 3 hours (1 per hour).  When snapshot 4 is taken the first one would be deleted therefore maintaining the 3 hours of rollback capability.  As an advanced option if the virtual machine contains applications that are VSS aware Hyper-V will also notify the VM that a snapshot is being taken allowing the applications to ensure all their data is crash consistent.

If you would like to see this in action please see my YouTube channel here, for more updates follow me on Twitter.


QA Training | Paul Gregory

Paul Gregory

Head of Microsoft Infrastructure

A Microsoft Certified Trainer since 1995, Paul has worked both for and with some of the world's leading IT Services organisations – including Unisys, Dell and Microsoft during the Microsoft Windows (TAP) Technology Adoption Programme. Paul specializes in delivering training around the Windows Operating system as well infrastructure and management solutions around System Center going right back to SMS 1.0. Paul is a frequent visitor to Microsoft's Global Headquarters in Seattle to attend early product workshops and for many years has delivered training courses around the world on behalf of Microsoft. In addition to being actively involved in Microsoft's Windows TAP programme, Paul has recently delivered both Microsoft's Private Cloud 2012 readiness training to partners in the UK and was a member of the Microsoft global training team delivering Windows Server 2012 early adopter training. During recent years Microsoft has requested Paul to deliver System Center training at both Redmond and The South American head office to Microsoft Partners.
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