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Questions tagged [windows-cluster]

A computer cluster consists of a set of connected computers that work together, and thus can be viewed and operated as a single system in many respects. A Windows cluster is such a set of computers running a Windows operating system. This feature has been available since NT 4.0.

A computer cluster consists of a set of connected computers that work together, and thus can be viewed and operated as a single system in many respects. A Windows cluster is such a set of computers running a Windows operating system. This feature has been available since NT 4.0.

Microsoft has three technologies for clustering: Microsoft Cluster Service (MSCS), Component Load Balancing (CLB) (part of Application Center 2000), and Network Load Balancing Services (NLB). In Windows Server 2008 and Windows Server 2008 R2 the MSCS service has been renamed to Windows Server Failover Clustering and the Component Load Balancing (CLB) feature has been deprecated.

As with clusters running other operating systems, there are different types of clusters, with two primary variants.

Failover clusters are designed for high availability services and typically have a subset of the cluster "active" at any one time, while the rest are in a hot standby state, ready to take over in the event of a failure.

Parallel clusters are designed for high performance, and typically have all the members active at all times, to achieve more computations at a time. Modern supercomputers are all clustered systems, which are used to perform calculations that would take too long to be feasible on independent systems.

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Removing and reinstalling System Center Virtual Machine Manager 2012

I initially setup hyper-v on a single server with a FC SAN. I configured it as a failover cluster with just the one server in it, using cluster shared volumes for the VMs, knowing I'd expand later. I'm now getting ready to add my second host to the…
Grant
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Windows cluster for sql 2008 r2

Currently I have an sql server that is experiencing high cpu usage. There are tons of reads and writes happening continuously. The machine is a Dual Xeon E5645 @2.4GHz with 48GB of ram and using SSD drives in raid 5. I would like to beef up the…
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Windows failover cluster - Delegate permissions to Domain user to move a group to another node

Is it somehow possible to assign permisions to non-admin user to monitor and move cluster group? Is there any workaround for this? I'm interested in Windows server 2008 r2 and 2012. I'm avare there is read-only access for monitoring from Windows…
malibeg
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Advantage of Microsoft Cluster over Microsoft Network Load Balancer

Till recently, I assumed that Microsoft NLB worked at an OS/Machine level rather than an Application Level. i.e. the NLB just monitors heartbeats on the machine to check if machine is alive and then switches off a particular node if it's gone…
user93353
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Why am I getting warnings about missing DLLs when adding a node to a WSFC?

We're getting the following two errors when adding a node to our WSFC. The node was added successfully, but the 'SQL Server Availability Group' resource type could not be installed on it. Unable to find 'hadrres.dll' on any of the cluster…
Samantha Branham
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Hyper-V 2012 Host Cluster - To domain or not domain

I'm planning on implementing a Hyper-V 2012 cluster, in a host cluster configuration. Should the host machines be in a domain? If so, should that DC machine be a part of the cluster, or a seperate machine? Should the hosts be in the same domain as…
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Can Windows cluster failover a custom TCP Server application even when Windows itself is working?

I develop a TCP server application that listens to a specific port. One of my users is asking me if my application can run on an active-active Windows 2008 Enterprise cluster. Having only almost no experience in Windows Clustering, I googled and…
Joshua Lim
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Restarting the Cluster Service on a passive node in Windows Server 2008 R2

I'm experiencing a problem with the CQL on an exchange server which is acting as a passive node in a DAG cluster. To make the counters show the correct values in EMC and PS i've been adviced to restart the Cluster Service on the passive node. Is…
simme
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How do I resolve the message "Validating WSFC quorum vote configuration - Action Required."

I have a 3 node AlwaysOn Availability Group on a 3 node WSFC using node majority. 2 nodes are setup as synchronous with automatic fail-over, the 3rd is setup as asynchronous with manual fail-over. When I try to fail-over using the GUI, I get a…
Rob Boek
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Quorum Disk size for Windows 2008R2 failover

I am setting up a two node failover cluster for SQL Server 2008 R2 on Windows Server 2008 R2. Microsoft recommends minimum 512MB size LUN for the quorum disk and don't have a recommendation for the witness LUN. What do people typically run with…
bakesale
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Enable MPIO in existing cluster without downtime

I have a 4 node Hyper-V cluster running on Windows 2008 R2. Prior to my tenure, the cluster had only single links to the SAN. I added redundant links but now I need to enable MPIO on all of the nodes. Has anyone enabled MPIO on an existing cluster?…
longneck
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Service fails to start when failover kicks in

I created a Windows Service which hosts a WCF application looking at/binding to the Clustered MSMQ The Windows service was first installed on both nodes of the cluster. I then created a cluster of this through the high availability wizard (selecting…
Ahmed ilyas
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Cloud Storage as a File Share Witness?

Does anyone know if there is a service out there that can be used as a file share witness for a Windows Server 2008 R2 Failover Cluster File share witness? I have a two-node cluster but no good place for my file share witness - can I use the…
Mike DeFehr
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Installing SQL Server 2008 SP2 fails in 2003 cluster setup

When I try to install SP2 (or simply "repair" the SQL Server installation), the dependency check finds the following problem: Rule "Not clustered or the cluster service is up and online." failed. The machine is clustered, but the cluster is not…
Andrew J. Brehm
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How do I configure a DCHP reservation for an IP Resource in a Windows 2008 R2 failover cluster?

Background My company has recently instituted a corporate policy that all servers are to have IP addresses that are issued via DHCP reservations to simplify the management of our IP scopes. We have a Windows 2008 R2 Failover Cluster that is…
Matthew Ball
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