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|Oracle Solaris Cluster Upgrade Guide Oracle Solaris Cluster 4.0|
Observe the following requirements and software-support guidelines when you upgrade the Oracle Solaris Cluster 4.0 software:
Minimum Oracle Solaris OS - The cluster must run on Oracle Solaris 11 software.
Supported hardware - The cluster hardware must be a supported configuration for Oracle Solaris Cluster 4.0 software. Contact your Oracle representative for information about current supported Oracle Solaris Cluster configurations.
Architecture changes during upgrade - Oracle Solaris Cluster 4.0 software does not support upgrade between architectures.
Software migration - Do not migrate from one type of software product to another product during Oracle Solaris Cluster upgrade. Perform only software configuration changes that are specified by upgrade procedures of an installed software product.
Data services - You must upgrade data-service software to the latest Oracle Solaris Cluster version.
Upgrading to compatible versions - You must upgrade all software on the cluster nodes to a version that is supported by Oracle Solaris Cluster 4.0 software. See Supported Products in Oracle Solaris Cluster 4.0 Release Notes for information about supported products.
Downgrade - Oracle Solaris Cluster 4.0 software does not support any downgrade of Oracle Solaris Cluster software.
Limitation of scinstall for data-service upgrades - The scinstall upgrade utility only upgrades those data services that are provided with Oracle Solaris Cluster 4.0 software. You must manually upgrade any custom or third-party data services.