Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/05000 for Orac - Page 80

4-6 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide Planning Cluster Interconnect and Client LAN Components PDC/O5000 clusters running Oracle8i Parallel Server can use a redundant Ethernet cluster interconnect. A redundant cluster interconnect is required because it provides fault tolerance along the cluster interconnect paths. Planning an Ethernet Cluster Interconnect NOTE: Refer to the technical white paper Supported Ethernet Interconnects for Compaq Parallel Database Clusters Using Oracle Parallel Server for detailed information about configuring redundant Ethernet cluster interconnects. This document is available at www.compaq.com/support/techpubs/whitepapers Before installing the Ethernet cluster interconnect in a PDC/O5000 cluster, review these planning considerations: I Whether to use two Ethernet switches or two Ethernet hubs for the cluster interconnect. If your cluster will contain or grow to three or more nodes, you must use two Ethernet switches. I Whether to use two dual-port Ethernet adapters in each node that will connect to both the cluster interconnect and the client LAN or to use separate single-port adapters for the Ethernet cluster interconnect and the client LAN. Planning the Client LAN Every client/server application requires a local area network (LAN) over which client machines and servers communicate. In the case of a cluster, the hardware components of the client LAN are no different than in a stand-alone server configuration. In keeping with the redundant architecture of the cluster interconnect, you may choose to install a redundant client LAN, with redundant Ethernet adapters and redundant Ethernet switches or hubs.