1. Read the upgrade requirements and restrictions. 

Upgrade Requirements and Support Guidelines

2. Remove the cluster from production, disable resources, and back up shared data and system disks. If the cluster uses dual-string mediators for Solstice DiskSuite or Solaris Volume Manager software, unconfigure the mediators. 

How to Prepare the Cluster for a Nonrolling Upgrade

3. Upgrade the Solaris software, if necessary, to a supported Solaris update. Optionally, upgrade VERITAS Volume Manager (VxVM). 

How to Perform a Nonrolling Upgrade of the Solaris OS

4. Upgrade to Sun Cluster 3.1 9/04 framework and data-service software. If necessary, upgrade applications. If the cluster uses dual-string mediators, reconfigure the mediators. SPARC: If you upgraded VxVM, upgrade disk groups. 

How to Perform a Nonrolling Upgrade of Sun Cluster 3.1 9/04 Software

5. Enable resources and bring resource groups online. Optionally, migrate existing resources to new resource types. 

How to Finish a Nonrolling Upgrade to Sun Cluster 3.1 9/04 Software

6. (Optional) SPARC: Upgrade the Sun Cluster module for Sun Management Center, if needed.

SPARC: How to Upgrade Sun Cluster-Module Software for Sun Management Center