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| Oracle Solaris Cluster Upgrade Guide Oracle Solaris Cluster 4.1

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## Upgrade Requirements and Software Support Guidelines

Observe the following requirements and software-support guidelines when you upgrade to the Oracle Solaris Cluster 4.1 software:

- Minimum Oracle Solaris OS - Oracle Solaris 11.1 software is the minimum required to support Oracle Solaris Cluster 4.1 software.

  Note - To upgrade directly to Oracle Solaris 11.1 software, an Oracle Solaris 11 system must be installed with at least SRU 10. Oracle Solaris software does not support direct upgrade to Oracle Solaris 11.1 software from an Oracle Solaris 11 system that is installed with less than SRU 10.

- Minimum Oracle Solaris Cluster software version - The cluster must run at least Oracle Solaris Cluster 4.0 software before upgrade.

  Note - Oracle Solaris 11.2 software requires Oracle Solaris Cluster 4.1 SRU 8.

- Supported hardware - The cluster hardware must be a supported configuration for Oracle Solaris Cluster 4.1 software. Contact your Oracle representative for information about current supported Oracle Solaris Cluster configurations.

- Architecture changes during upgrade - Oracle Solaris Cluster 4.1 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.

- Upgrading to compatible versions - You must upgrade all software on the cluster nodes to a version that is supported by Oracle Solaris Cluster 4.1 software. For example, if an application version is supported on Oracle Solaris Cluster 4.0 software but is not supported on Oracle Solaris Cluster 4.1 software, you must upgrade to an application version that is supported on Oracle Solaris Cluster 4.1 software, if such a version exists. See Supported Products in Oracle Solaris Cluster 4.1 Release Notes for information about supported products.

- Migration from Oracle Solaris 10 - You can alternatively migrate Oracle Solaris Cluster 3.3 software running on the Oracle Solaris 10 OS to a `solaris10` brand zone cluster. On a global cluster that already runs Oracle Solaris Cluster 4.1 software on Oracle Solaris 11.1 software, create a new `solaris10` brand zone cluster. Then migrate to the zone cluster your Oracle Solaris Cluster 3.3 configuration and applications. See Chapter 6, Creating Zone Clusters, in Oracle Solaris Cluster Software Installation Guide and Creating the Image for Directly Migrating Oracle Solaris 10 Systems Into Zones in Oracle Solaris 11.1 Administration: Oracle Solaris Zones, Oracle Solaris 10 Zones, and Resource Management.

- Downgrade - Oracle Solaris Cluster 4.1 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 4.1 software. You must manually upgrade any custom or third-party data services, unless they also have IPS packages and later versions are available in their publisher.

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