First experiences with a rolling cluster upgrade of a lab Hyper-V Cluster (Technical Preview)

Posted: October 22, 2014 in Exchange 2010

Working Hard In IT

Introduction

In vNext we have gotten a long awaited & very welcome new capability: rolling cluster upgrades. Which for the Hyper-V roles is a 100% zero down time experience. The only step that will require some down time is the upgrade of the virtual machine configuration files to vNext (version 5 to 6) as the VM has to be shut down for this.

How to

The process for a rolling upgrade is so straight forward I’ll just give you a quick bullet list of the first part of the process:

  • Evacuate the workload from the cluster node you’re going to upgrade
  • Evict the node to upgrade to vNext from the cluster
  • Upgrade (no in place upgrade supported but in your lab you can get away with it)
  • Add the upgraded node to the cluster
  • Rinse & repeat until all nodes have been upgraded (that can take a while with larger…

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