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  • Blog Post: Understanding the Repair Active Directory Object Recovery Action

    One of the responsibilities of cluster Network Name resource is to rotate the password of the computer object in Active Directory associated with it. When the Network Name resource is online, it will rotate the password according to domain and local machine policy (which is 30 days by default). If...
  • Blog Post: How to Properly Shutdown a Failover Cluster or a Node

    This blog will discuss the proper process for shutting down an individual node in a Windows Server 2012 R2 Failover Cluster or the entire cluster with all the nodes. Note: While the steps outlined will be specific to Windows Server 2012 R2, the process applies to a cluster of any OS version. Shutting...
  • Blog Post: How to Enable CSV Cache

    Overview Cluster Shared Volumes (CSV) Cache is a feature in Windows Server 2012 and beyond which allows you to allocate system memory (RAM) as a write-through cache. The CSV Cache provides caching of read-only unbuffered I/O. This can improve performance for applications such as Hyper-V, which conducts...
  • Blog Post: Failover Clustering Sessions @ TechEd 2013

    If you were not able to make it to TechEd 2013 this year, you can still watch the sessions and learn about the new enhancements coming. Here’s links to the recorded cluster sessions at TechEd 2013: Continuous Availability: Deploying and Managing Clusters Using Windows Server 2012 R2 http://channel9...
  • Blog Post: Validate Storage Spaces Persistent Reservation Test Results with Warning

    I have seen questions from customers who get a warning in the results of their failover cluster validation that indicates the storage doesn’t support persistent reservations for Storage Spaces. They want to know why they got the warning, what it means, and what should they do about it. First, here...
  • Blog Post: Optimizing CSV Backup Performance

    Cluster Shared Volumes (CSV) is a clustered file system available in Windows Server 2012 where all nodes in a Windows Server Failover Cluster can simultaneously access a common shared NTFS volume. CSV has a distributed backup infrastructure which enables backups to be taken from any node in the cluster...
  • Blog Post: MSMQ Errors in the Cluster.log

    After using the Get-ClusterLog cmdlet to generate the Cluster.log, you may notice the following errors in the cluster log: ERR [RHS] s_RhsRpcCreateResType: ERROR_NOT_READY(21)' because of 'Startup routine for ResType MSMQ returned 21.' WARN [RCM] Failed to load restype 'MSMQ': error 21. ERR [RHS...
  • Blog Post: Configuring How VMs Are Moved when a Node is Drained

    Introducing some concepts: Windows Server 2012 introduced the ability to drain a node, which is sometimes also referred to as Node Maintenance Mode. When you drain a node, the Windows Server Failover Cluster will Pause the node to prevent any new VMs from moving to that node, then it will automatically...
  • Blog Post: Understanding how Failover Clustering Recovers from Unresponsive Resources

    In this blog I will discuss how Failover Clustering communicates with cluster resources, along with how clustering detects and recovers when something goes wrong. For the sake of simplicity I will use a Virtual Machine as an example throughout this blog, but the logic is generic and applies to all workloads...
  • Blog Post: Tuning Failover Cluster Network Thresholds

    Windows Server Failover Clustering is a high availability platform that is constantly monitoring the network connections and health of the nodes in a cluster. If a node is not reachable over the network, then recovery action is taken to recover and bring applications and services online on another node...
  • Blog Post: BUILD 2012: Designing applications for highly-availability with Windows Server 2012 Failover Clustering

    BUILD 2012 wrapped up last week. In case you were not able to make it, the sessions are now posted that you can watch. Here is a link to the cluster session. Session: 3-051 Title: Designing applications for highly-availability with Windows Server 2012 Failover Clustering Abstract: Learn how...
  • Blog Post: Windows Server 2012 Storage Migration for Cluster Managed Virtual Machines

    Storage migration is a new feature in Windows 8 Server that allows moving the files for a virtual machine (VM) to a new location while the VM is running. For example, suppose your VM’s files are currently on a SAN volume, but the SAN storage device is being retired. A new SAN is deployed and...
  • Blog Post: How to Configure an Alias for a Clustered SMB Share with Windows Server 2012

    Starting with Windows Server 2008, SMB file shares on a Failover Cluster are scoped so that they are only accessible by valid UNC paths associated with the network name they are bound to. See this blog for more information: http://blogs.technet.com/b/askcore/archive/2009/01/09/file-share-scoping-in-windows...
  • Blog Post: How to add storage to Clustered Shared Volumes in Windows Server 2012

    In Windows Server 2012 Cluster Shared Volumes (CSV) has been more tightly integrated into the Failover Clustering feature. The process for a cluster Physical Disk Resource (PDR) to be enabled for CSV has been simplified and streamlined. In this blog, I will show you the new experience of adding storage...
  • Blog Post: How to Create a Cluster in a Restrictive Active Directory Environment

    In Windows Server 2012 there have been several enhancements to how Windows Server Failover Clusters integrate with the Active Directory. In this blog I am going to discuss some of the changes to help enable creating Failover Clusters in restrictive Active Directory environments where permissions to create...
  • Blog Post: How to Enable Failover Clustering and Network Load Balancing PowerShell Help on Windows Server 2012

    Hi Cluster Fans, In Windows Server 2012, Windows PowerShell® cmdlet help content has new functionality that enables it to be updatable over the life of the product. This allows us to get feedback from the community and update the help with enhanced explanations or additional examples even after...
  • Blog Post: Welcome to Windows Server 2012 Failover Clustering

    The beta of Windows Server “8” is now available for IT professionals and software developers around the world to download, to evaluate, and to give us feedback on. Specifically for the Failover Clustering feature, we have delivered a large number of new features in Windows Server 2012...
  • Blog Post: Free Online Training: Understanding Microsoft's High-Availability Solutions

    Hi Cluster Fans, We recently launched the free & public Microsoft Virtual Academy ( www.MicrosoftVirtualAcademy.com ). This training portal offers quick and easy access to presentations, webcasts, whitepapers and other technical content about Microsoft’s technologies. This week we just...
  • Blog Post: Announcement: Upcoming Cluster & Hyper-V Training for User Groups

    Hi Cluster Fans, On Thursday, July 14 th we will be giving online training to user groups about Failover Clustering & Hyper-V: Planning your Highly-Available Virtualization Environment . This event is run in collaboration with Microsoft’s User Group Support Services (UGSS) and will be presented...
  • Blog Post: Managing Hardware Snapshots on Failover Clusters

    In this blog I will discuss how clusters identify disks and considerations of presenting a hardware snapshot of a LUN back to the same cluster. Windows Server Failover Clustering has a kernel mode driver called ClusDisk.sys that listens for PnP arrivals of new disks to the system. When a new disk...
  • Blog Post: Follow the Cluster Blog on your Windows 7 phone

    Now you can now follow this blog on your Windows 7 phone! An RSS reader for cluster-related feeds is now available, including this cluster team blog, the cluster Technet forums, and even blogs from Cluster MVP’s. Keep up to date on the latest Windows Server Failover Clustering news, right on your...
  • Blog Post: Clustered File Servers and the Remote Volume Management Firewall Setting

    Hi Cluster Fans, A common mistake when creating clustered file is not opening the appropriate firewall setting, Remote Volume Management . This can cause the file server to give errors for various operations. Remote Volume Management provides remote software and hardware disk volume management...
  • Blog Post: Trouble Connecting to Cluster Nodes? Check WMI!

    A frequent cluster network connection issue we see happens when the cluster cannot use WMI. WMI is Windows Management Instrumentation, which is an interface through which Windows components can provide information and notifications to each other, often between remote computers ( more info about WMI ...
  • Blog Post: Clustering & High-Availability at TechEd Europe

    Hi Cluster Fans, In a few weeks the cluster team will be presenting at TechEd Europe from November 8-12 in Berlin, Germany. Additionally, several partner teams and Cluster MVPs will also be delivering high-availability sessions. Throughout the week, the team will be staffing the cluster booth,...
  • Blog Post: Recommended Partner Blog Posts: Mapping Cluster.exe to PowerShell, PowerShell for iSCSI & Storage Server 2008 R2 RTM!

    Hi Cluster Fans, We wanted to let you know about some great cluster-related blog posts that Jose Barreto, a Program Manager on the File & Storage team, has recently published. Mapping Cluster.exe Commands to Windows PowerShell Cmdlets for Failover Clusters - Extended Edition Link:...
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