Announcement: Upcoming Cluster & Hyper-V Training for User Groups

Hi Cluster Fans, On Thursday, July 14th 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 by Technical Evangelist Symon Perriman. This workshop will actually teach you or… Read more

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 using RPC.  More information about using Remote Volume Management with File… Read more

Changing Clustered IP Addresses & Configuring a DHCP or WINS Cluster

Hi Cluster Fans, In Windows Server 2008 and Windows Server 2008 R2 we have simplified how easy it is to create and use a Failover Cluster.  For example, if we detect you are using DHCP in your datacenter, we will automatically assign the cluster as well as clustered applications and services a DHCP IP Address. … Read more

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).  Failover Clustering and System Center Virtual Machine Manager (SCVMM) often use WMI… Read more

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: ·         Part 1: http://blogs.msdn.com/b/clustering/archive/2010/03/11/9976620.aspx ·        … Read more

Guest Failover Clustering with VMware

This blog discusses running a Windows Server Failover Cluster (WSFC) in a virtual machine (VM) on top of a VMware host.  Running a cluster in a virtualized environment is commonly referred to as “Guest Clustering”.  Guest Clustering provides two key values: 1.       Application Health Monitoring – Enables health monitoring of applications running within a VM. … Read more

Working with Private Properties using Cluster WMI

Hi Cluster Fans, In the forums we have noticed several people have question about how to manipulate a Cluster Object’s private properties using WMI.  To work with private properties it’s important to understand how private properties work.  Private properties of any cluster object are dynamic in nature, so these properties cannot be predefined in WMI… Read more

Introduction to the Cluster Quorum Model

Failover clusters ensure that workloads such as File Server, Exchange, SQL, and Virtual Machines are highly available.  These resources are considered highly available if the nodes that host resources are up, however the cluster generally requires more than half the nodes to be running, which is known as having “quorum”.   Quorum is designed to prevent… Read more

Creating a Cluster Resource DLL (Part 3)

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: ·         Part 1: http://blogs.msdn.com/clustering/archive/2010/03/11/9976620.aspx ·         Part… Read more

Creating a Cluster Resource DLL (Part 2)

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 first blog post in the series: ·         Part 1: http://blogs.msdn.com/clustering/archive/2010/03/11/9976620.aspx   Now… Read more