Planning the Upgrade

To support Sun Cluster 3.0 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 modifying partitions. The mirror can be used to recover the original configuration if the upgrade procedure fails. Refer to your volume manager documentation for information.

• Root (/) file system allocation - If you need 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.

Refer to "System Disk Partitions" for more information about disk space requirements to support Sun Cluster 3.0 software.