The cluster configuration used in the examples presented in this article consists of two cluster nodes with Sun StorEdge_ T3 arrays as shared storage. The boot disk is mirrored on both cluster nodes with qfe network controllers used for the private cluster interconnect. FIGURE 1 shows these cluster components.
FIGURE 1 Cluster Configuration Example
The procedures used in this particular example assume the following: Sun Cluster 3.0 software and appropriate patches are already installed, the boot disk is mirrored, the quorum device is configured, and the private interconnects are set up. This is the condition that a SunToneSM Cluster Platform is in after a few configuration questions, but these steps can be performed on any supported configuration. The two Sun StorEdge T3 arrays are configured as single RAID-5 LUNs. Not shown are the additional public network connections that should be created from unused ports on the qfe network controller to create Network Adapter Fail Over (NAFO) groups. For testing purposes, a NAFO group consisting of a single eri adapter is used.
The physical host name chosen for cluster node 1 is alpha and the cluster node 2 name is beta. These names are used throughout the examples presented. Additional explanations of Sun Cluster 3.0 software components can be obtained from previous Sun BluePrints' Online articles, such as "Cluster Platform 220/1000 Architecture" by Enrique Vargas, published August 2001, and the SunTone Cluster Platform User Manual.