Failover Clustering Sets for Start Ordering

In a private cloud there may be multi-tier applications which are deployed across a set of virtual machines. Such as a database running in one VM, and an application leveraging that database running in another VM. It may be desired to have start ordering of highly available virtual machines which have dependencies.   Sets: Virtual… Read more

Failover Clustering @ Ignite 2016

I am packing my bags getting ready for Ignite 2016 in Atlanta, and I thought I would post all the cluster and related sessions you might want to check out.  See you there! If you couldn’t make it to Ignite this year, don’t worry you can stream all these sessions online. Cluster BRK3196 – Keep… Read more

Using PowerShell script make any application highly available

Author: Amitabh Tamhane Senior Program Manager Windows Server Microsoft OS releases: Applicable to Windows Server 2008 R2 or later Now you can use PowerShell scripts to make any application highly available with Failover Clusters!!! The Generic Script is a built-in resource type included in Windows Server Failover Clusters. Its advantage is flexibility: you can make… Read more

NetFT Virtual Adapter Performance Filter

In this blog I will discuss what the NetFT Virtual Adapter Performance Filter is and the scenarios when you should or should not enable it. The Microsoft Failover Cluster Virtual Adapter (NetFT) is a virtual adapter used by the Failover Clustering feature to build fault tolerant communication routes between nodes in a cluster for intra-cluster… Read more

Speeding Up Failover Tips-n-Tricks

From time-to-time people ask me for suggestions on what tweaks they can do to make Windows server Failover Cluster failover faster. In this blog I’ll discuss a few tips-n-tricks. Disable NetBIOS over TCP/IP – Unless you need legacy OS compatibility, NetBIOS is doing you nothing but slow you down.  You want to disable NetBIOS in a… Read more

Failover Cluster VM Load Balancing in Windows Server 2016

Windows Server 2016 introduces the Virtual Machine Load Balancing feature to optimize the utilization of nodes in a Failover Cluster. During the lifecycle of your private cloud, certain operations (such as rebooting a node for patching), results in the Virtual Machines (VMs) in your cluster being moved. This could result in an unbalanced cluster where some nodes are… Read more

Troubleshooting Hangs Using Live Dump

In this blog post we discussed what a Cluster Shared Volumes (CSV) event ID 5120 means, and how to troubleshoot it. In particular, we discussed the reason for auto-pause due to STATUS_IO_TIMEOUT (c00000b5), and some options on how to troubleshoot it. In this post we will discuss how to troubleshoot it using LiveDumps, which enables debugging the system… Read more

Managing Failover Clusters with 5nine Manager

Hi Cluster Fans, It is nice to be back on the Cluster Team Blog!  After founding this blog and working closely with the cluster team for almost eight years, I left Microsoft last year to join a Hyper-V software partner, 5nine Software.  I’ve spoken with thousands of customers and I realized that Failover Clustering is… Read more