Troubleshooting Cluster Shared Volume Auto-Pauses – Event 5120

In the previous post we have discussed how CSVFS abstracts failures from applications by going through the pause/resume state machine and we have also explained what the auto-pause is. Focus for this blog post will be auto-pauses. CSV auto pauses when it receives any failure from Direct IO or Block Redirected IO with a few… Read more

vNext Failover Clustering in Windows Server Technical Preview

Interested in the new features coming for Failover Clustering?  I recently stopped over at Channel 9 and did an interview where we discussed some of the big clustering and availability features in Windows Server Technical Preview. Here’s the link:     Thanks!Elden ChristensenPrincipal Program Manager LeadClustering & High-AvailabilityMicrosoft … Read more

Cluster Shared Volume Failure Handling

This is the fourth blog post in a series about Cluster Shared Volumes (CSV). In this post we will explain how CSV handles storage failures and how it hides failures from applications. This blog will build on prior knowledge with the assumption that the reader is familiar with the previous blog posts:  Cluster Shared Volume… Read more

Symantec ApplicationHA for Hyper-V

In previous blogs I had discussed the Failover Clustering VM Monitoring feature adding in Windows Server 2012. You can find these blogs here and here. Below is a guest blog describing Symantec ApplicationHA for Hyper-V which leverages the functionality provided by VM Monitoring.   Hi my name is Lorenzo Galelli, Senior Technical Product Manager at… Read more

Planning Failover Cluster Node Sizing

In this blog I will discuss considerations on planning the number of nodes in a Windows Server Failover Cluster. Starting with Windows Server 2012, Failover Clustering can support to up 64-nodes in a single cluster making it industry leading in scale for a private cloud.  While this is exciting, the reality is that it is… Read more

Cluster Shared Volume Performance Counters

This is the third blog post in a series about Cluster Shared Volumes (CSV). In this post we will go over performance monitoring. We assume that reader is familiar with the previous blog posts.  Blog post explains CSV components and different CSV IO modes. Second blog post explains tools that help you to understand… Read more

Sessions at TechEd Houston 2014 from the Cluster team

The Cluster team presented multiple exciting sessions at the sold-out TechEd Houston from May 12-15th! If you didn’t get a chance to attend the conference in-person, the sessions are now posted online so you can watch on-demand!  Here are the sessions, their descriptions, and links to the videos. The sessions from the clustering team at… Read more

Deploying SQL Server 2014 with Cluster Shared Volumes

An exciting new feature in SQL Server 2014 is the support for the deployment of a Failover Cluster Instance (FCI) with Cluster Shared Volumes (CSV). In this blog, I am going to discuss the value of deploying SQL Server with CSV as well as how you can deploy SQL with CSV. I also did a session… Read more

Configuring a File Share Witness on a Scale-Out File Server

In this blog, I am going to discuss the considerations for configuring a File Share Witness (FSW) for the Failover Cluster hosting your workloads, on a separate Scale-Out File Server cluster. You can find more information on Failover Clustering quorum here. File Share Witness on a Scale-Out File Server It is supported to use a… Read more

Failover Clustering and IPv6 in Windows Server 2012 R2

In this blog, I will discuss some common questions pertaining to IPv6 and Windows Server 2012 R2 Failover Clusters. What network protocol does Failover Clustering default to? If both IPv4 and IPv6 are enabled (which is the default configuration), IPv6 will be always used by clustering. The key take away is that it is not… Read more