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Greetings AskCore fans. I thought I would start creating a blog for a subset of the videos/sessions available at each of the conferences that Microsoft has throughout the year. These sessions will be available and will deal with topics that are discussed here on the AskCore Blog. There are numerous other...

I recently encountered an issue involving the failure of a new Network Name resource to come online.   Doing some investigation I found a number of instances where this has been encountered, with different resolutions provided.   Since no root cause was defined, fellow Directory Services Engineer...

The IT Pro Evangelism team, Microsoft Learning and the Microsoft Virtual Academy are pleased to announce the next FREE & PUBLIC event Live Q&A: Introduction to Hyper-V on Wednesday April 3 rd , from 8:30 am – 10:00am PST with virtualization experts Jeff Woolsey (Principal Program Manager...

In a previous blog , it was discussed on where you can get a list of the Failover Clustering and Hyper-V hotfixes for Windows Server 2008 R2. Looking for Windows Server 2008 R2 Cluster and Hyper-V Hotfixes? http://blogs.technet.com/b/askcore/archive/2013/02/15/looking-for-windows-server-2008-r2...

The Microsoft Virtual Academy training portal offers quick and easy access to presentations, webcasts, whitepapers and other technical content about Microsoft’s Cloud technologies. It is public, free and you learn at your own pace while earning awards and recognitions, and connecting with over...

I often get asked the question by customers on how to find the newly released hotfixes for Cluster and Hyper-V or the customer wants to know what hotfixes are out there. We have 3 Wiki pages that will make life easier for you when looking for hotfixes for Windows Server 2008 R2 Cluster and Hyper-V. You...

The IT Pro Evangelism team, Microsoft Learning and the Microsoft Virtual Academy are pleased to announce the next Jump Start courses! Introduction to Hyper-V Thursday, January 24th This one-day live event is designed for IT Pros experienced in virtualization (i.e., VMware) but in need of...

Hello everyone. Today’s post is going to cover the steps needed to follow should you ever have to remove a ‘Physical Disk’ resource from a clustered service or application where that disk is configured as a mount point. Removing a disk from a group may be needed if the application no...

On Tuesday, Jaunary 8, the below recommended fix was released and available on Windows Update for Windows .NET Framework 4.5. 2750149 An update is available for the .NET Framework 4.5 in Windows 8, Windows RT and Windows Server 2012 http://support.microsoft.com/kb/2750149/EN-US When installing...

In Part 1 , I covered configuring the Hyper-V Failover Cluster and the Scale-Out File Server solution. In Part two, I will cover: Creating the file shares in the Scale-Out File Server Creating a virtual machine to use the SMB3.0 shares in the Scale-Out File Server Verifying we can Live Migrate the virtual...

Just when you thought you had things figured out - in the words of the legendary Bob Dylan, "the times they are a-changin." With the release of Windows Server 2012, Microsoft introduces a load of new features, which, in some cases, translates into doing some of the same things in different...

I am starting a 'CNO Blog Series', which will consist of blogs written by the CORE team cluster engineers and will focus primarily on the Cluster Name Object (CNO). The CNO is the computer object in Active Directory associated with the Cluster Name; it is used as a common identity in the cluster. If...

Start getting familiar with Windows Server 2012 Failover Clustering by viewing the sessions that were delivered at TechEd 2012. These sessions are posted online now for your viewing pleasures. For those not familiar with what TechEd is, I offer this. TechEd is Microsoft's premier technology conference...

Welcome to the AskCore blog. Today, we are going to talk about nodes being removed from active Failover Cluster membership randomly. If you are having problems with a node being removed from membership, you are seeing events like this logged in your System Event Log: This event will be logged on...

In a previous blog, Understanding the Cluster Debug Log in 2008 , you were given the information on how Cluster logging in Windows 2008 Failover Clustering and beyond has changed from the earlier versions. In this blog, you were shown how the size of the log can be manipulated in order to keep a recommended...

Hello, my name is Steven Graves and I am a Support Escalation Engineer (SEE) in the Platforms Support group here at Microsoft. One of the technologies I support is Windows Server Failover Clustering. I’d like to take a couple of minutes to share some information on an issue I previously worked on. The...

A fix for the above titled problem has been released. If you are running into this problem, please downlaod and install the following fix on all Clusters running McAfee and wanting the updates they provide. 2674551 Redirected mode is enabled unexpectedly in a Cluster Shared Volume when you are...

My name is Sean Dwyer and I am a Support Escalation Engineer with the Microsoft CORE team. I’d like to share a quick tip for handling Windows Server Cluster administrators. There may come a time, for whatever reason, that a Cluster managed volume is flagged as dirty and you will see...

There is an issue with Cluster Shared Volumes and McAfee VirusScan Enterprise that I wanted to pass along. When installing McAfee VSE 8.7 Patch 5 or 8.8 Patch 1, the CSV drives will go into redirected mode and will not go out of it. The reason for this is that the McAfee filter driver (mfehidk.sys...

Greetings Cluster fans,   John Marlin back for another go at it.   I wanted to write something about what we have been seeing involving the use of Cluster Shared Volumes (CSV) and File Server resources on the same Cluster.   There have been multiple instances we have seen regarding a Stop...

Several months ago, I posted a blog on adding a new disk to an existing cluster. Another question we get asked a lot is “How do I replace a disk?” In this blog, I’ll walkthrough the process of replacing a 1GB disk with a 2GB disk. This process is similar to how you could go about doing a SAN migration...

One question I get asked a lot working with our customers is how to failover the ‘Cluster Group’ and ‘Available Storage’ groups? Under the covers, those two groups are still just groups like any other you’d see under ‘Services and Applications’ in Failover Cluster Manager. We just didn’t expose through...

Hello Cluster fans, I am back for another go at it.  This one you will need to hark back to the days of Windows 2003 Server Clusters.  Many of you still have this running and may have seen Access Denied issues with node joins, the opening of Cluster Administrator, and Cluster Service failures...

With Failover Cluster and the quorum models used, the concept of votes is used to determine which subset of nodes survives should one group of nodes lose connectivity with another group of nodes in the same cluster. In this example, we’re using a ‘Node Majority’ quorum model and two sites separated by...

We wanted to do a quick write-up on an issue we’ve seen in rare circumstances with 2008 R2 clusters where a ‘Physical Disk’ resource may fail to come online with no events logged in the system event log. Issue They symptoms of this issue is that the disk will show in a ‘failed’ state in Failover Cluster...