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  • Blog Post: My Disk is Read-only, Help!

    Recently I helped someone on an issue where the customer had a disk that was part of a Windows 2008 R2 Service Pack 1 Cluster. They could bring the disk online, but they couldn’t write to it. During the course of troubleshooting, they ran Diskpart and looked at the attributes of the disk. They...
  • Blog Post: Nodes being removed from Failover Cluster membership on VMWare ESX?

    Welcome to the AskCore blog. Today, we are going to talk about nodes being removed from active Failover Cluster membership when the nodes are hosted on VMWare ESX. I have documented node membership problems in a previous blog: Having a problem with nodes being removed from active Failover Cluster membership...
  • Blog Post: Where’s my disk space?

    I have worked a few customer cases lately that have had the same issue.   Explorer shows that a disk has plenty of disk space available.   When you look at the same disk in Disk Management, you see that it is almost full.   One thing that can cause this is leftover shadow copies.  ...
  • Blog Post: Why are my Cluster Networks Dropping Periodically?

    Lately I have been seeing customer issues with Windows 2008 Clustering where they are seeing both of their networks drop connections and this is causing a failover event. In the cases that I have seen, they are usually very busy SQL clusters. Windows needs available resources in order to run core services...
  • Blog Post: Having a problem with nodes being removed from active Failover Cluster membership?

    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...