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  • Blog Post: When to use Hyper-V Dynamic Memory versus Runtime Memory Resize

    Starting in Windows 10/Windows Server Technical Preview, Hyper-V allows you to resize virtual machine memory without shutting down the virtual machine. You might be thinking, “Hyper-V already has dynamic memory… what is this about?”. I get a lot of questions about why you would use...
  • Blog Post: PowerShell Direct – Running PowerShell inside a virtual machine from the Hyper-V host

    At Ignite we announced PowerShell Direct, and briefly demoed it’s capabilities in the “What’s New in Hyper-V” session . This is a follow up so you can get started using PowerShell Direct in your own environment. What is PowerShell Direct? It is a new way of running PowerShell...
  • Blog Post: Hyper-V at Ignite

    Ignite 2015 was full of new information about Hyper-V. Check out some of the many talks about (or related to) Hyper-V. I'm sure I inevitably missed a few talks/interviews. If there are any great ones I'm missing, leave a link in the comments. * See also: Information about Windows containers...
  • Blog Post: Hyper-V receives Red Hat certification

    If you run Red Hat Enterprise Linux (RHEL) as a guest OS on Hyper-V, you will be interested to know that Red Hat certifies Hyper-V as a supported hypervisor for running RHEL. The support services you get from Red Hat via your RHEL subscription are fully available when running RHEL in an on-premises installation...
  • Blog Post: Integration components: How we determine Windows Update applicability

    Last week we began distributing integration components through Windows Update . In the November rollup, integration components were made available to Windows Server 2012/2008R2 virtual machines along with Windows 8/7 virtual machines running on Windows Technical Preview hosts. Ben wrote a great blog...
  • Blog Post: Hyper-V integration components are available through Windows Update

    Starting in Windows Technical Preview, Hyper-V integration components will be delivered directly to virtual machines using Windows Update. Integration components (also called integration services) are the set of synthetic drivers which allow a virtual machine to communicate with the host operating...
  • Blog Post: Announcing the GA of Disaster Recovery to Azure using Azure Site Recovery

    I am excited to announce the GA of the Disaster Recovery to Azure using Azure Site Recovery . In addition to enabling replication to and recovery in Microsoft Azure, ASR enables automated protection of VMs, remote health monitoring, no-impact recovery plan testing, and single click orchestrated recovery...
  • Blog Post: Disaster Recovery to Microsoft Azure – Part 2

    Continuing from the previous blog - check out the recent TechEd NA 2014 talk @ https://channel9.msdn.com/Events/TechEd/NorthAmerica/2014/DCIM-B322 which includes a cool demo of this product. Love it??? Talk about it, try it and share your comments. Let’s retrace the journey - in Jan 2014, we announced...
  • Blog Post: Out-of-band Initial Replication (OOB IR) and Deduplication

    A recent conversation with a customer brought out the question: What is the best way to create an entire Replica site from scratch? At the surface this seems simple enough – configure initial replication to send the data over the network for the VMs one after another in sequence. For this specific customer...
  • Blog Post: Application consistent recovery points with Windows Server 2008/2003 guest OS

    I recently had a conversation with a customer around a very interesting problem, and the insights that were gained there are worth sharing. The issue was about VSS errors popping up in the guest event viewer while Hyper-V Replica reported the successful creation of application-consistent (VSS-based)...
  • Blog Post: Backup of a Replica VM

    This blog post covers the scenarios and motivations that drive the backup of a Replica VM, and product guidance to administrators. Why backup a Replica VM? Ever since the advent of Hyper-V Replica in Windows Server 2012, customers have been interested in backing up the Replica VM. Traditionally, IT administrators...
  • Blog Post: Error 0x80090303 when enabling replication

    When trying to enable replication on one of my VMs in my lab setup, I encountered the following error – Hyper-V failed to authenticate the Replica server <server name> using Kerberos authentication. Error: The specified target is unknown or unreachable (0x80090303). Needless to say, I was able...
  • Blog Post: Hyper-V Replica & Proxy Servers on primary site

    I was tinkering around with my lab setup which consists of a domain, proxy server, primary and replica servers. There are some gotchas when it comes to Hyper-V Replica and proxy servers and I realized that we did not have any posts around this. So here goes. If the primary server is behind a proxy server...
  • Blog Post: Hyper-V Replica Capacity Planner

    Customers have frequently asked us for capacity planning guidance before deploying Hyper-V Replica – e.g.: “How much network bandwidth is required between the primary and replica site”, “How much storage is required on the primary and replica site”, “What is the storage impact by enabling multiple recovery...
  • Blog Post: Hyper-V Replica Runbooks

    System Center 2012 Orchestrator provides a powerful workflow management solution which allows IT administrators to automate different tasks exposed by the platform. At the heart of the Orchestrator is a set of Runbooks which outline the sequence of activities for a given task. A number of resources are...
  • Blog Post: Hyper-V Replica Kerberos Error

    David is one of our Premier Field Engineers and he approached us with an interesting problem where the customer was encountering a Kerberos error when trying to create a replication relationship. On first glance, the setup looked very straight forward and all our standard debugging steps did not reveal...
  • Blog Post: Hyper-V Replica–Certificate Based Authentication in Windows Server 2012

    This post discusses a subtle change in the certificate workflow for Hyper-V Replica in Windows Server 2012 Release Candidate build and beyond. Note : The pre-requisites certificate based authentication remains unchanged (as seen in an earlier post “ Hyper-V Replica - Prerequisites for...
  • Blog Post: Network Recommendations for a Hyper-V Cluster in Windows Server 2012

    We recently published a TechNet document http://technet.microsoft.com/library/dn550728.aspx which provides guidance on configuring your network for a Hyper-V Cluster in Windows Server 2012. A snip of the summary from the document: Windows Server 2012 supports the concept of converged networking, where...
  • Blog Post: Measuring Replication Health in a cluster

    As part of running a mini-scale run in my lab, I had to frequently monitor the replication health and also note down the replication statistics. The statistics is available by by right clicking on the VM (in the Hyper-V Manager or Failover Cluster Manager) and choosing the Replication submenu and clicking...
  • Blog Post: Upgrading to Windows Server 2012 R2 with Hyper-V Replica

    The TechNet article http://technet.microsoft.com/en-us/library/dn486799.aspx provides detailed guidance on migrating Hyper-V VMs from a Windows Server 2012 deployment to a Windows Server 2012 R2 deployment. http://technet.microsoft.com/en-us/library/dn486792.aspx calls out the various VM migration...
  • Blog Post: What’s new in Hyper-V Replica in Windows Server 2012 R2

    18th October 2013 marked the General Availability of Windows Server 2012 R2. The teams have accomplished an amazing set of features in this short release cycle and Brad’s post @ http://blogs.technet.com/b/in_the_cloud/archive/2013/10/18/today-is-the-ga-for-the-cloud-os.aspx captures the investments...
  • Blog Post: Replica Clusters behind a NAT

    When a Hyper-V Replica Broker is configured in your DR site to accept replication traffic, Hyper-V along with Failover Clustering intelligently percolates these settings to all the nodes of the clusters. A network listener is started in each node of the cluster on the configured port.   While this...
  • Blog Post: Hyper-V Replica BPA Rules

    A frequent question from our customers is on whether there are standard “best practices” when deploying Hyper-V Replica (or any Windows Server role for that matter). These questions come in many avatars - Does the Product Group have any configuration gotchas based on internal testing, is my server properly...
  • Blog Post: Hyper-V Replica Certificate Based Authentication - makecert

    We have had a number of queries on how to enable replication using certificates created from makecert. Though the Understanding and Troubleshooting guide for Hyper-V Replica discusses this aspect, I am posting a separate article on this. The below steps are applicable for a simple lab deployment consisting...
  • Blog Post: Multi-tenant disaster recover solution using Windows Server 2012

    Windows Server 2012 introduces fundamental improvements that make it a cloud-ready operating system. The capabilities provide a flexible and scalable solution which opens up a wide range of opportunities for hosting providers to build new cloud services. This blog post is co-authored by Uma Mahesh...