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  • 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: 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: 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:...
  • Blog Post: Creating a Cluster Resource DLL (Part 5): Logs

    Hi, In this series of blog posts we will help you to design, develop and debug the Resource DLL you are developing to give your application high-availability with Windows Server 2008 & 2008 R2 Failover Clustering. We recommend you start with the other blog post in the series: ·...
  • Blog Post: Virtual Machine Density Flexibility in Windows Server 2008 R2 Failover Clustering

    Hi Cluster Fans, Recently Windows Server 2008 R2 Failover Clustering has changed the support statement for the maximum number of Virtual Machines (VMs) that can be hosted on a failover cluster from 64 VMs per node to 1,000 VMs per cluster . This article reflects the new policy in Hyper-V: Using...
  • Blog Post: Introduction to the Cluster Quorum Model (Part 2)

    Hi, A few weeks ago we gave an overview of the cluster quorum model: http://blogs.msdn.com/b/clustering/archive/2010/05/14/10012930.aspx This week we will provide some more details about when and how the different types are used. Node Majority & Node and Disk Majority The...
  • Blog Post: Upcoming Webcasts: Clustering & High-Availability

    Hi Cluster Fans, Over the next few weeks the cluster team is offering a series of public TechNet webcasts focusing on Failover Clustering in Windows Server 2008 R2. High Availability Server Apps with Windows Server 2008 R2 Failover Clusters Link: https://msevents.microsoft.com/CUI/WebCastEventDetails...
  • Blog Post: R2 Print Cluster? Get this Hotfix! KB 976571

    Hi Cluster Fans, Many of you use Failover Clustering to prov ide high-availability to your print servers to ensure that the print spooler resource stays up and running. We have recently released a Rollup Hotfix specific to print clustering which contains several fixes to improve the stability of...
  • Blog Post: PowerShell for Failover Clustering: Creating Highly Available Workloads

    Hi Clustering PowerShell Scripters, One of the things we’ve provided in Failover Clustering PowerShell is a set of CMDlets to easily create highly available workloads in a cluster. PS C:\Windows\system32> Get-Command -Module FailoverClusters | ?{ $_.Name -like "Add-Cluster*Role" } CommandType...
  • Blog Post: Dynamic Disks with Windows Server Failover Clustering

    Since Failover Clustering traditionally requires shared storage (you could also use hardware or software replication between nodes), we get a lot of questions about which shared storage types we support. Windows Server Failover Clustering has a very flexible storage model that allows a wide variety of...
  • Blog Post: Copying VHDs onto a CSV Disk? Use the Coordinator Node!

    With Cluster Shared Volumes (CSV) one of the nodes in the cluster is responsible for synchronization of access to files on a shared volume. This is the node which currently owns the cluster ‘Physical Disk’ resource associated with that LUN, which is referred to as the Coordinator node. Each...
  • Blog Post: PowerShell Help Online & Management Pack Updates for Failover Clustering & NLB

    Hi Cluster Fans, We have added Windows Server 2008 R2 PowerShell help on TechNet and have updated our Management Packs to support 2008 R2 for System Center Operation Manager (SCOM), for both Failover Clustering and Network Load Balancing. PowerShell Help Online With PowerShell help online...
  • Blog Post: Microsoft Site Recovery Solutions Featuring Windows Server 2008 R2 Failover Clustering

    Hi cluster fans, This week Microsoft is launching an end-to-end solution to help customers deploy integrated Site Recovery Solutions ( http://blogs.technet.com/virtplanet/ ). This launch shows how Microsoft and partners like HP, EMC, HDS, NetApp, DataCore, DoubleTake and SteelEye are leveraging...
  • Blog Post: PowerShell for NLB: Part 1: Getting Started

    Hi NLB Fans, NLB provides users with various methods to manage clusters. In Windows Server 2008, there are 3 ways to manage an NLB cluster: 1. Network Load balancing Manager GUI (nlbmgr.exe) 2. NLB command line tool (Nlb.exe) 3. NLB WMI Provider (root\MicrosoftNLB namespace) In...
  • Blog Post: Clustered Hyper-V Upgrades from Server 2008 to Server 2008 R2

    Hi Cluster Fans, We’ve just published documentation describing the upgrade path for clustered VMs on 2008 Failover Clusters to 2008 R2 Failover Clusters. Hyper-V Upgrades: http://support.microsoft.com/kb/957256 [Update: 11/12/09] A new cluster migration guide has been published which describes...
  • Blog Post: PowerShell for Failover Clustering: Let’s Rename a Few Things

    Hi Cluster fans, In this blog post, I’ll walk you through how to rename a couple of objects in your failover clusters using the new PowerShell CMDlets we’ve introduced in Windows Server 2008 R2. Trying to rename a cluster group in the GUI is easy, just right-click on the group, rename, enter the...
  • Blog Post: Failover Clustering Performance Counters - Part 1

    Hi Cluster Fans, In Windows Server 2008 R2 we have added performance counters for Failover Clustering. Performance counters are like meters you have on some devices in your house. For instance, your electrical or water meter tracks what utilities you have consumed or your thermometer shows you the...
  • Blog Post: PowerShell for Failover Clustering: Read-Only Cluster Access

    Hi cluster fans, Amongst the list of new features we introduced in Windows Server 2008 R2 Failover Clustering is “read-only cluster access”. Before Windows Server 2008 R2, you were either given full control on the cluster or no control at all. If you wanted to give anyone access to your cluster...
  • Blog Post: Resource Group Management Enhancements in 2008 R2 Failover Clustering – Part 2

    Hi, The first post in this series looked at two changes that have been implemented in Windows Server 2008 R2 Failover Clustering to improve group distribution and resource load balancing amongst nodes, so that each node is more likely to receive an equal number of groups after certain events (such...
  • Blog Post: Resource Group Management Enhancements in 2008 R2 Failover Clustering – Part 1

    In Windows Server 2008 R2 Failover Clustering, some changes have been made and new features added with regard to group placement and resource load balancing. These changes make it easier to manage clustered Hyper-V virtual machines, as well as other clustered roles, so that they are hosted on the best...
  • Blog Post: Failover Clusters, Performance Counters, and PowerShell

    Hi Clustering and Scripting fans, If you’ve done any work with PowerShell v1.0 or v2.0, you have probably realized by now how rich the library of cmdlets is. There are a ton of cmdlets that allow you to automate almost any and everything across the system to use PowerShell. Here is one more thing...
  • Blog Post: DNS Registration with the Network Name Resource

    Hi Cluster Fans, In this post we will discuss some of the implementation details around the Network Name (“NetName”) resource and its behavior in Windows Server 2008 R2. Introduction The purpose of Network Name is to allow clients to be able to resolve the DNS name to an IP Address to establish...
  • Blog Post: What is RHS and what does it do?

    In Window Server 2008 Failover Clustering, the team invested significant time into making clustering easier. In the Windows Server 2008 R2 release we have continued down that path, adding several troubleshooting enhancements. One of the important aspects of troubleshooting a service outage is doing...
  • Blog Post: PowerShell Remoting and the “Double-Hop” Problem

    The “Double-Hop” Problem Most of the newly added PowerShell cmdlets (“command-lets”) in Windows Server 2008 R2 allow easy remote execution by including the -Cluster parameter to indicate the target cluster. However there are occasions when this capability cannot be used for different reasons, such...
  • Blog Post: PowerShell for Failover Clustering: Frequently Asked Questions & Enabling CSV

    Hi, Today I’m going to talk a little more about PowerShell by answering some of the frequently asked questions I hear. 1) Why is PowerShell better? 2) How do I get started using PowerShell? 3) Where are the properties? 4) Where are the private properties? 5) How do I enable CSV?...
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