Phased upgrade example overview

Last published : Sep 11, 2026
This example's upgrade path follows:
  • Move all the failover service groups from the first subcluster to the second subcluster.
  • Take all the parallel service groups offline on the first subcluster.
  • Upgrade the operating system on the first subcluster's nodes, if required.
  • On the first subcluster, start the upgrade using the installation program.
  • Get the second subcluster ready.
  • Activate the first subcluster. After activating the first cluster, switch the service groups online on the second subcluster to the first subcluster.
  • Upgrade the operating system on the second subcluster's nodes, if required.
  • On the second subcluster, start the upgrade using the installation program.
  • Activate the second subcluster.
See Performing a phased upgrade using the product installer.
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