Overview of Upgrading From Sun Cluster 2.2 to Sun Cluster 3.0 12/01 Software

This section provides conditions, restrictions, and planning guidelines for upgrading from Sun Cluster 2.2 to Sun Cluster 3.0 12/01 software.

Conditions and Restrictions

The following conditions must be met to upgrade from Sun Cluster 2.2 to Sun Cluster 3.0 12/01 software.

• The cluster must have exactly two nodes and be a supported configuration for Sun Cluster 3.0 12/01 software. The upgrade does not support clusters of three or more nodes.

• Only Ethernet adapters are supported. Transport adapters must have a transmission rate of 100 Mbit/sec or greater.

• All cluster hardware must be stable and working properly.

• All third-party applications must be functioning properly.

• The cluster must already run on, or be upgraded to, at least the minimum required level of the Solaris 8 operating environment that supports Sun Cluster 3.0 12/01 software.

• You must upgrade all Sun Cluster software, framework, and data services at the same time.

• Sun Cluster 3.0 12/01 software does not support upgrading directly to Sun Cluster 3.0 12/01 software from Solstice HA 1.3, Sun Cluster 2.0, or Sun Cluster 2.1 software.

• Sun Cluster 3.0 12/01 software does not support converting from one volume manager product to another during upgrade.

• The upgrade from Sun Cluster 2.2 to Sun Cluster 3.0 12/01 software cannot be reversed after the scinstall(1M) command has been started on a node, even if the command does not complete successfully. To restart a failed upgrade, you must first reinstall Sun Cluster 2.2 software on the node.

Planning the Upgrade

To support Sun Cluster 3.0 12/01 software, you probably need to change your current system disk layout. Consider the following when planning your new partitioning scheme.

• Global devices namespace - On each node you must create a file system of at least 100 MBytes and set its mount point as /globaldevices. This file system will be converted during upgrade to the appropriate global device namespace. If necessary, you can remove some of the swap space for this purpose, or use an external disk that is not shared with any other node.

• Mirrored root - If your root disks are mirrored, you must unmirror them before you modify partitions. The mirror can be used to recover the original configuration if the upgrade procedure fails. See your volume manager documentation for information.

• Root (/) file system allocation - If you intend to upgrade your configuration to the Solaris 8 operating environment, you probably need to increase the size of your root (/) partition on the root disks of all Sun Cluster nodes.

See "System Disk Partitions" for more information about disk space requirements to support Sun Cluster 3.0 12/01 software.