How to use VMDK sharing for Guest OS clustering

Operating system clustering is one of the major and popular high availability mechanism in system infrastructure products. Advantage of the os clustering is it can identify the application level failure.

As a systems administrators most of the time we may need to work with MS windows failover clusters. Most of the file servers and SQL clusters are depend on this failover cluster technology. Most of the situation one of the main requirement is this failover cluster is shared lus/disk. Earlier most of the time we sued to have minimum two physical servers for this cluster operation which is directly connect to SAN device(Shared storage). But to get the benefits of virtualization platform and reduce the cost , now we have to use same cluster features on top of the virtualization platform.

1. In my below example Im using two test virtual machines.


2. Now we need to add new scsi controller per this vm

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Troubleshooting vMotion

This blog post from is dedicated to gaining more knowledge on what to do when troubleshooting vMotion if a live-migration is not successful. What are typical reasons for failed migrations? What logs to look into? Let’s have a look at how you can troubleshoot and prevent vMotion operations to fail

Full VMware Blog Troubleshooting vMotion

NSX-T 2.5 – A New Marker on the Innovation Timeline

NSX-T has seen great success in the market for multi-platform network and security use-cases, including automation, multi-cloud adoption, and containers as customers move through the digital transformation initiative. NSX-T is the industry’s only network and security platform delivering a wide range of L2-L7 services, built from the ground up for workloads running on all types of infrastructure – virtual machines, containers, physical servers and both private and public clouds.

Follow the link for full article NSX-T 2.5 – A New Marker on the Innovation Timeline